697388255 has 8 divisors (see below), whose sum is σ = 880911600. Its totient is φ = 528546816.

The previous prime is 697388249. The next prime is 697388269. The reversal of 697388255 is 552883796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 697388255 - 2⁴ = 697388239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 697388197 and 697388206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670370 + ... + 3670559.

It is an arithmetic number, because the mean of its divisors is an integer number (110113950).

Almost surely, 2^697388255 is an apocalyptic number.

697388255 is a deficient number, since it is larger than the sum of its proper divisors (183523345).

697388255 is a wasteful number, since it uses less digits than its factorization.

697388255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340953.

The product of its digits is 3628800, while the sum is 53.

The square root of 697388255 is about 26408.1096445770. The cubic root of 697388255 is about 886.7983498776.

The spelling of 697388255 in words is "six hundred ninety-seven million, three hundred eighty-eight thousand, two hundred fifty-five".