651021676 has 6 divisors (see below), whose sum is σ = 1139287940. Its totient is φ = 325510836.

The previous prime is 651021673. The next prime is 651021703. The reversal of 651021676 is 676120156.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (651021673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81377706 + ... + 81377713.

Almost surely, 2^651021676 is an apocalyptic number.

It is an amenable number.

651021676 is a deficient number, since it is larger than the sum of its proper divisors (488266264).

651021676 is a wasteful number, since it uses less digits than its factorization.

651021676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162755423 (or 162755421 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 651021676 is about 25515.1264155207. The cubic root of 651021676 is about 866.6927219649.

The spelling of 651021676 in words is "six hundred fifty-one million, twenty-one thousand, six hundred seventy-six".