696221051 has 4 divisors (see below), whose sum is σ = 696328704. Its totient is φ = 696113400.

The previous prime is 696221021. The next prime is 696221069. The reversal of 696221051 is 150122696.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 696221051 - 2¹⁴ = 696204667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 696220999 and 696221017.

It is not an unprimeable number, because it can be changed into a prime (696221021) 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, 43460 + ... + 57281.

It is an arithmetic number, because the mean of its divisors is an integer number (174082176).

Almost surely, 2^696221051 is an apocalyptic number.

696221051 is a deficient number, since it is larger than the sum of its proper divisors (107653).

696221051 is a wasteful number, since it uses less digits than its factorization.

696221051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107652.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 696221051 is about 26386.0010422193. The cubic root of 696221051 is about 886.3033350504.

The spelling of 696221051 in words is "six hundred ninety-six million, two hundred twenty-one thousand, fifty-one".