190684564 has 24 divisors (see below), whose sum is σ = 381870720. Its totient is φ = 81614496.

The previous prime is 190684537. The next prime is 190684567. The reversal of 190684564 is 465486091.

It is a self number, because there is not a number n which added to its sum of digits gives 190684564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190684567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19434 + ... + 27550.

It is an arithmetic number, because the mean of its divisors is an integer number (15911280).

Almost surely, 2^190684564 is an apocalyptic number.

190684564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

190684564 is an abundant number, since it is smaller than the sum of its proper divisors (191186156).

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

190684564 is a wasteful number, since it uses less digits than its factorization.

190684564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8967 (or 8965 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 190684564 is about 13808.8581714782. The cubic root of 190684564 is about 575.5793168310.

It can be divided in two parts, 19068 and 4564, that added together give a palindrome (23632).

The spelling of 190684564 in words is "one hundred ninety million, six hundred eighty-four thousand, five hundred sixty-four".