651020156 has 12 divisors (see below), whose sum is σ = 1151031168. Its totient is φ = 322154112.

The previous prime is 651020141. The next prime is 651020191.

651020156 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838556 + ... + 839331.

It is an arithmetic number, because the mean of its divisors is an integer number (95919264).

Almost surely, 2^651020156 is an apocalyptic number.

It is an amenable number.

651020156 is a deficient number, since it is larger than the sum of its proper divisors (500011012).

651020156 is a wasteful number, since it uses less digits than its factorization.

651020156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677988 (or 1677986 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 651020156 is about 25515.0966292507. The cubic root of 651020156 is about 866.6920474487.

The spelling of 651020156 in words is "six hundred fifty-one million, twenty thousand, one hundred fifty-six".