763821690 has 32 divisors (see below), whose sum is σ = 1867764096. Its totient is φ = 199842240.

The previous prime is 763821689. The next prime is 763821701. The reversal of 763821690 is 96128367.

It is a happy number.

It is a super-2 number, since 2×763821690² = 1166847148228912200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238606 + ... + 241785.

It is an arithmetic number, because the mean of its divisors is an integer number (58367628).

Almost surely, 2^763821690 is an apocalyptic number.

763821690 is an abundant number, since it is smaller than the sum of its proper divisors (1103942406).

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

763821690 is a wasteful number, since it uses less digits than its factorization.

763821690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480454.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 763821690 is about 27637.3242192510. The cubic root of 763821690 is about 914.1076193171.

The spelling of 763821690 in words is "seven hundred sixty-three million, eight hundred twenty-one thousand, six hundred ninety".