651294866 has 4 divisors (see below), whose sum is σ = 976942302. Its totient is φ = 325647432.

The previous prime is 651294859. The next prime is 651294893. The reversal of 651294866 is 668492156.

651294866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 581822641 + 69472225 = 24121^2 + 8335^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 651294866.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162823715 + ... + 162823718.

Almost surely, 2^651294866 is an apocalyptic number.

651294866 is a deficient number, since it is larger than the sum of its proper divisors (325647436).

651294866 is a wasteful number, since it uses less digits than its factorization.

651294866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325647435.

The product of its digits is 622080, while the sum is 47.

The square root of 651294866 is about 25520.4793450280. The cubic root of 651294866 is about 866.8139358876.

The spelling of 651294866 in words is "six hundred fifty-one million, two hundred ninety-four thousand, eight hundred sixty-six".