651612967 has 4 divisors (see below), whose sum is σ = 651670200. Its totient is φ = 651555736.

The previous prime is 651612947. The next prime is 651612971. The reversal of 651612967 is 769216156.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651612967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651612947) 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 in 3 ways as a sum of consecutive naturals, for example, 5092 + ... + 36457.

It is an arithmetic number, because the mean of its divisors is an integer number (162917550).

Almost surely, 2^651612967 is an apocalyptic number.

651612967 is a deficient number, since it is larger than the sum of its proper divisors (57233).

651612967 is a wasteful number, since it uses less digits than its factorization.

651612967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57232.

The product of its digits is 136080, while the sum is 43.

The square root of 651612967 is about 25526.7108535354. The cubic root of 651612967 is about 866.9550340371.

The spelling of 651612967 in words is "six hundred fifty-one million, six hundred twelve thousand, nine hundred sixty-seven".