190686764 has 6 divisors (see below), whose sum is σ = 333701844. Its totient is φ = 95343380.

The previous prime is 190686763. The next prime is 190686781. The reversal of 190686764 is 467686091.

It is a happy number.

190686764 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×190686764² = 72722883929583392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190686763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23835842 + ... + 23835849.

It is an arithmetic number, because the mean of its divisors is an integer number (55616974).

Almost surely, 2^190686764 is an apocalyptic number.

It is an amenable number.

190686764 is a deficient number, since it is larger than the sum of its proper divisors (143015080).

190686764 is a wasteful number, since it uses less digits than its factorization.

190686764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47671695 (or 47671693 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 190686764 is about 13808.9378302605. The cubic root of 190686764 is about 575.5815303814.

The spelling of 190686764 in words is "one hundred ninety million, six hundred eighty-six thousand, seven hundred sixty-four".