769139760 has 160 divisors (see below), whose sum is σ = 2591262720. Its totient is φ = 188006400.

The previous prime is 769139743. The next prime is 769139773. The reversal of 769139760 is 67931967.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138640 + ... + 144080.

It is an arithmetic number, because the mean of its divisors is an integer number (16195392).

Almost surely, 2^769139760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 769139760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1295631360).

769139760 is an abundant number, since it is smaller than the sum of its proper divisors (1822122960).

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

769139760 is a wasteful number, since it uses less digits than its factorization.

769139760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507 (or 5501 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 769139760 is about 27733.3690704898. The cubic root of 769139760 is about 916.2241907851.

The spelling of 769139760 in words is "seven hundred sixty-nine million, one hundred thirty-nine thousand, seven hundred sixty".