651897922 has 16 divisors (see below), whose sum is σ = 1056508992. Its totient is φ = 299892240.

The previous prime is 651897913. The next prime is 651897937. The reversal of 651897922 is 229798156.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32854 + ... + 48817.

It is an arithmetic number, because the mean of its divisors is an integer number (66031812).

Almost surely, 2^651897922 is an apocalyptic number.

651897922 is a deficient number, since it is larger than the sum of its proper divisors (404611070).

651897922 is a wasteful number, since it uses less digits than its factorization.

651897922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81993.

The product of its digits is 544320, while the sum is 49.

The square root of 651897922 is about 25532.2917498606. The cubic root of 651897922 is about 867.0813908275.

The spelling of 651897922 in words is "six hundred fifty-one million, eight hundred ninety-seven thousand, nine hundred twenty-two".