696438961 has 4 divisors (see below), whose sum is σ = 697990500. Its totient is φ = 694887424.

The previous prime is 696438959. The next prime is 696438979. The reversal of 696438961 is 169834696.

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

It can be written as a sum of positive squares in 2 ways, for example, as 171112561 + 525326400 = 13081^2 + 22920^2 .

It is a cyclic number.

It is not a de Polignac number, because 696438961 - 2¹ = 696438959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 696438899 and 696438908.

It is not an unprimeable number, because it can be changed into a prime (696468961) 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, 775096 + ... + 775993.

It is an arithmetic number, because the mean of its divisors is an integer number (174497625).

Almost surely, 2^696438961 is an apocalyptic number.

It is an amenable number.

696438961 is a deficient number, since it is larger than the sum of its proper divisors (1551539).

696438961 is a wasteful number, since it uses less digits than its factorization.

696438961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551538.

The product of its digits is 1679616, while the sum is 52.

The square root of 696438961 is about 26390.1299921012. The cubic root of 696438961 is about 886.3957933357.

The spelling of 696438961 in words is "six hundred ninety-six million, four hundred thirty-eight thousand, nine hundred sixty-one".