190660764 has 72 divisors (see below), whose sum is σ = 528595200. Its totient is φ = 53307744.

The previous prime is 190660759. The next prime is 190660781. The reversal of 190660764 is 467066091.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24187 + ... + 31085.

It is an arithmetic number, because the mean of its divisors is an integer number (7341600).

Almost surely, 2^190660764 is an apocalyptic number.

190660764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190660764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264297600).

190660764 is an abundant number, since it is smaller than the sum of its proper divisors (337934436).

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

190660764 is a wasteful number, since it uses less digits than its factorization.

190660764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967 (or 6958 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 190660764 is about 13807.9963789103. The cubic root of 190660764 is about 575.5553691529. Note that the first 3 decimals are identical.

The spelling of 190660764 in words is "one hundred ninety million, six hundred sixty thousand, seven hundred sixty-four".