190977064 has 16 divisors (see below), whose sum is σ = 370430100. Its totient is φ = 92195712.

The previous prime is 190977053. The next prime is 190977077. The reversal of 190977064 is 460779091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 176092900 + 14884164 = 13270^2 + 3858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 190977064.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411357 + ... + 411820.

Almost surely, 2^190977064 is an apocalyptic number.

It is an amenable number.

190977064 is a deficient number, since it is larger than the sum of its proper divisors (179453036).

190977064 is a wasteful number, since it uses less digits than its factorization.

190977064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823212 (or 823208 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 190977064 is about 13819.4451408152. The cubic root of 190977064 is about 575.8734691847.

The spelling of 190977064 in words is "one hundred ninety million, nine hundred seventy-seven thousand, sixty-four".