696019561 has 4 divisors (see below), whose sum is σ = 696076432. Its totient is φ = 695962692.

The previous prime is 696019553. The next prime is 696019573. The reversal of 696019561 is 165910696.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 696019561 - 2³ = 696019553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696019501) 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, 1695 + ... + 37348.

It is an arithmetic number, because the mean of its divisors is an integer number (174019108).

Almost surely, 2^696019561 is an apocalyptic number.

It is an amenable number.

696019561 is a deficient number, since it is larger than the sum of its proper divisors (56871).

696019561 is a wasteful number, since it uses less digits than its factorization.

696019561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56870.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 696019561 is about 26382.1826428368. The cubic root of 696019561 is about 886.2178265332.

The spelling of 696019561 in words is "six hundred ninety-six million, nineteen thousand, five hundred sixty-one".