695866401 has 24 divisors (see below), whose sum is σ = 1016171520. Its totient is φ = 458843616.

The previous prime is 695866351. The next prime is 695866411. The reversal of 695866401 is 104668596.

695866401 is a `hidden beast` number, since 6 + 9 + 586 + 64 + 0 + 1 = 666.

It is not a de Polignac number, because 695866401 - 2⁶ = 695866337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (695866411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 478191 + ... + 479643.

It is an arithmetic number, because the mean of its divisors is an integer number (42340480).

Almost surely, 2^695866401 is an apocalyptic number.

It is an amenable number.

695866401 is a deficient number, since it is larger than the sum of its proper divisors (320305119).

695866401 is a wasteful number, since it uses less digits than its factorization.

695866401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 695866401 is about 26379.2797665137. The cubic root of 695866401 is about 886.1528173068.

The spelling of 695866401 in words is "six hundred ninety-five million, eight hundred sixty-six thousand, four hundred one".