697893660 has 72 divisors (see below), whose sum is σ = 2138821776. Its totient is φ = 184181760.

The previous prime is 697893659. The next prime is 697893661. The reversal of 697893660 is 66398796.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (697893659) and next prime (697893661).

It is a junction number, because it is equal to n+sod(n) for n = 697893597 and 697893606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697893661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2526 + ... + 37445.

It is an arithmetic number, because the mean of its divisors is an integer number (29705858).

Almost surely, 2^697893660 is an apocalyptic number.

697893660 is a gapful number since it is divisible by the number (60) 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 697893660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069410888).

697893660 is an abundant number, since it is smaller than the sum of its proper divisors (1440928116).

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

697893660 is a wasteful number, since it uses less digits than its factorization.

697893660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40083 (or 40078 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The square root of 697893660 is about 26417.6770364088. The cubic root of 697893660 is about 887.0125223468.

The spelling of 697893660 in words is "six hundred ninety-seven million, eight hundred ninety-three thousand, six hundred sixty".