697021011 has 8 divisors (see below), whose sum is σ = 1032623760. Its totient is φ = 464680656.

The previous prime is 697020991. The next prime is 697021021. The reversal of 697021011 is 110120796.

697021011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 697021011 - 2²⁶ = 629912147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 25815593 = 697021011 / (6 + 9 + 7 + 0 + 2 + 1 + 0 + 1 + 1).

It is not an unprimeable number, because it can be changed into a prime (697021021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12907770 + ... + 12907823.

It is an arithmetic number, because the mean of its divisors is an integer number (129077970).

Almost surely, 2^697021011 is an apocalyptic number.

697021011 is a deficient number, since it is larger than the sum of its proper divisors (335602749).

697021011 is a wasteful number, since it uses less digits than its factorization.

697021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25815602 (or 25815596 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 697021011 is about 26401.1554860767. The cubic root of 697021011 is about 886.6426601530.

The spelling of 697021011 in words is "six hundred ninety-seven million, twenty-one thousand, eleven".