770990838 has 16 divisors (see below), whose sum is σ = 1554124800. Its totient is φ = 254973096.

The previous prime is 770990833. The next prime is 770990849. The reversal of 770990838 is 838099077.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770990833) 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, 505138 + ... + 506661.

It is an arithmetic number, because the mean of its divisors is an integer number (97132800).

Almost surely, 2^770990838 is an apocalyptic number.

770990838 is an abundant number, since it is smaller than the sum of its proper divisors (783133962).

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

770990838 is a wasteful number, since it uses less digits than its factorization.

770990838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011931.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 770990838 is about 27766.7217726544. The cubic root of 770990838 is about 916.9586232706.

The spelling of 770990838 in words is "seven hundred seventy million, nine hundred ninety thousand, eight hundred thirty-eight".