697720927 has 4 divisors (see below), whose sum is σ = 698997016. Its totient is φ = 696444840.

The previous prime is 697720921. The next prime is 697720973. The reversal of 697720927 is 729027796.

697720927 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 697720927 - 2⁷ = 697720799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697720921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637224 + ... + 638317.

It is an arithmetic number, because the mean of its divisors is an integer number (174749254).

Almost surely, 2^697720927 is an apocalyptic number.

697720927 is a deficient number, since it is larger than the sum of its proper divisors (1276089).

697720927 is a wasteful number, since it uses less digits than its factorization.

697720927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276088.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 697720927 is about 26414.4075648120. The cubic root of 697720927 is about 886.9393359455.

The spelling of 697720927 in words is "six hundred ninety-seven million, seven hundred twenty thousand, nine hundred twenty-seven".