646762377 has 16 divisors (see below), whose sum is σ = 873936000. Its totient is φ = 425403264.

The previous prime is 646762351. The next prime is 646762387. The reversal of 646762377 is 773267646.

646762377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646762377 - 2⁸ = 646762121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646762387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133524 + ... + 138282.

It is an arithmetic number, because the mean of its divisors is an integer number (54621000).

Almost surely, 2^646762377 is an apocalyptic number.

It is an amenable number.

646762377 is a deficient number, since it is larger than the sum of its proper divisors (227173623).

646762377 is a wasteful number, since it uses less digits than its factorization.

646762377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360.

The product of its digits is 1778112, while the sum is 48.

The square root of 646762377 is about 25431.5232929528. The cubic root of 646762377 is about 864.7984771165.

The spelling of 646762377 in words is "six hundred forty-six million, seven hundred sixty-two thousand, three hundred seventy-seven".