651076620 has 96 divisors (see below), whose sum is σ = 1858127040. Its totient is φ = 170311680.

The previous prime is 651076609. The next prime is 651076639. The reversal of 651076620 is 26670156.

It is a super-2 number, since 2×651076620² = 847801530221248800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738580 + ... + 739460.

It is an arithmetic number, because the mean of its divisors is an integer number (19355490).

Almost surely, 2^651076620 is an apocalyptic number.

651076620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651076620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929063520).

651076620 is an abundant number, since it is smaller than the sum of its proper divisors (1207050420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651076620 is a wasteful number, since it uses less digits than its factorization.

651076620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 651076620 is about 25516.2030874501. The cubic root of 651076620 is about 866.7171032449.

The spelling of 651076620 in words is "six hundred fifty-one million, seventy-six thousand, six hundred twenty".