696564021 has 8 divisors (see below), whose sum is σ = 960778080. Its totient is φ = 448362992.

The previous prime is 696564019. The next prime is 696564041. The reversal of 696564021 is 120465696.

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 696564021 - 2¹ = 696564019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696564041) 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, 4003155 + ... + 4003328.

It is an arithmetic number, because the mean of its divisors is an integer number (120097260).

Almost surely, 2^696564021 is an apocalyptic number.

It is an amenable number.

696564021 is a deficient number, since it is larger than the sum of its proper divisors (264214059).

696564021 is a wasteful number, since it uses less digits than its factorization.

696564021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8006515.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 696564021 is about 26392.4993321966. The cubic root of 696564021 is about 886.4488470511.

The spelling of 696564021 in words is "six hundred ninety-six million, five hundred sixty-four thousand, twenty-one".