651535967 has 4 divisors (see below), whose sum is σ = 656509656. Its totient is φ = 646562280.

The previous prime is 651535909. The next prime is 651535979. The reversal of 651535967 is 769535156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 651535967 - 2¹² = 651531871 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 (651535987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2486648 + ... + 2486909.

It is an arithmetic number, because the mean of its divisors is an integer number (164127414).

Almost surely, 2^651535967 is an apocalyptic number.

651535967 is a deficient number, since it is larger than the sum of its proper divisors (4973689).

651535967 is a wasteful number, since it uses less digits than its factorization.

651535967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4973688.

The product of its digits is 850500, while the sum is 47.

The square root of 651535967 is about 25525.2025848964. The cubic root of 651535967 is about 866.9208838229.

The spelling of 651535967 in words is "six hundred fifty-one million, five hundred thirty-five thousand, nine hundred sixty-seven".