769717998 has 64 divisors (see below), whose sum is σ = 1957662720. Its totient is φ = 219602016.

The previous prime is 769717981. The next prime is 769717999. The reversal of 769717998 is 899717967.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769717999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421315 + ... + 423137.

It is an arithmetic number, because the mean of its divisors is an integer number (30588480).

Almost surely, 2^769717998 is an apocalyptic number.

769717998 is an abundant number, since it is smaller than the sum of its proper divisors (1187944722).

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

769717998 is a wasteful number, since it uses less digits than its factorization.

769717998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958 (or 2952 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 63.

The square root of 769717998 is about 27743.7920623696. The cubic root of 769717998 is about 916.4537385474.

The spelling of 769717998 in words is "seven hundred sixty-nine million, seven hundred seventeen thousand, nine hundred ninety-eight".