651936 has 24 divisors (see below), whose sum is σ = 1711584. Its totient is φ = 217280.

The previous prime is 651913. The next prime is 651943. The reversal of 651936 is 639156.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

651936 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3300 + ... + 3491.

It is an arithmetic number, because the mean of its divisors is an integer number (71316).

2⁶⁵¹⁹³⁶ is an apocalyptic number.

It is an amenable number.

651936 is an abundant number, since it is smaller than the sum of its proper divisors (1059648).

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

651936 is a wasteful number, since it uses less digits than its factorization.

651936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804 (or 6796 counting only the distinct ones).

The product of its digits is 4860, while the sum is 30.

The square root of 651936 is about 807.4255383625. The cubic root of 651936 is about 86.7098272858.

It can be divided in two parts, 6519 and 36, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 651936 in words is "six hundred fifty-one thousand, nine hundred thirty-six".