697564080 has 120 divisors (see below), whose sum is σ = 2382503760. Its totient is φ = 182853120.

The previous prime is 697564073. The next prime is 697564093. The reversal of 697564080 is 80465796.

697564080 is a `hidden beast` number, since 6 + 9 + 7 + 564 + 0 + 80 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34270 + ... + 50690.

It is an arithmetic number, because the mean of its divisors is an integer number (19854198).

Almost surely, 2^697564080 is an apocalyptic number.

697564080 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 697564080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191251880).

697564080 is an abundant number, since it is smaller than the sum of its proper divisors (1684939680).

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

697564080 is a wasteful number, since it uses less digits than its factorization.

697564080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16499 (or 16490 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 697564080 is about 26411.4384311041. The cubic root of 697564080 is about 886.8728699253.

The spelling of 697564080 in words is "six hundred ninety-seven million, five hundred sixty-four thousand, eighty".