773664990 has 128 divisors (see below), whose sum is σ = 2266030080. Its totient is φ = 165110400.

The previous prime is 773664977. The next prime is 773665001. The reversal of 773664990 is 99466377.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 281925 + ... + 284655.

It is an arithmetic number, because the mean of its divisors is an integer number (17703360).

Almost surely, 2^773664990 is an apocalyptic number.

773664990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 773664990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133015040).

773664990 is an abundant number, since it is smaller than the sum of its proper divisors (1492365090).

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

773664990 is a wasteful number, since it uses less digits than its factorization.

773664990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838.

The product of its (nonzero) digits is 1714608, while the sum is 51.

The square root of 773664990 is about 27814.8339919547. The cubic root of 773664990 is about 918.0175451481.

The spelling of 773664990 in words is "seven hundred seventy-three million, six hundred sixty-four thousand, nine hundred ninety".