1697250240 has 672 divisors, whose sum is σ = 7366406400. Its totient is φ = 365783040.

The previous prime is 1697250223. The next prime is 1697250263. The reversal of 1697250240 is 420527961.

1697250240 is a `hidden beast` number, since 169 + 7 + 250 + 240 = 666.

1697250240 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1697250195 and 1697250204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8043735 + ... + 8043945.

Almost surely, 2^1697250240 is an apocalyptic number.

1697250240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1697250240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3683203200).

1697250240 is an abundant number, since it is smaller than the sum of its proper divisors (5669156160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1697250240 is a wasteful number, since it uses less digits than its factorization.

1697250240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1697250240 is about 41197.6970230133. The cubic root of 1697250240 is about 1192.8393559718.

The spelling of 1697250240 in words is "one billion, six hundred ninety-seven million, two hundred fifty thousand, two hundred forty".