1697478480 has 120 divisors (see below), whose sum is σ = 5732981280. Its totient is φ = 450097920.

The previous prime is 1697478479. The next prime is 1697478491. The reversal of 1697478480 is 848747961.

It is a happy number.

1697478480 is a `hidden beast` number, since 1 + 6 + 97 + 4 + 78 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×1697478480² = 5762866380126220800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122295 + ... + 135465.

It is an arithmetic number, because the mean of its divisors is an integer number (47774844).

Almost surely, 2^1697478480 is an apocalyptic number.

1697478480 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 1697478480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2866490640).

1697478480 is an abundant number, since it is smaller than the sum of its proper divisors (4035502800).

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

1697478480 is a wasteful number, since it uses less digits than its factorization.

1697478480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13369 (or 13360 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The square root of 1697478480 is about 41200.4669876447. The cubic root of 1697478480 is about 1192.8928231321.

The spelling of 1697478480 in words is "one billion, six hundred ninety-seven million, four hundred seventy-eight thousand, four hundred eighty".