769699840 has 312 divisors, whose sum is σ = 2353110480. Its totient is φ = 239468544.

The previous prime is 769699829. The next prime is 769699841. The reversal of 769699840 is 48996967.

It is not an unprimeable number, because it can be changed into a prime (769699841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13045731 + ... + 13045789.

Almost surely, 2^769699840 is an apocalyptic number.

769699840 is a gapful number since it is divisible by the number (70) 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 769699840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176555240).

769699840 is an abundant number, since it is smaller than the sum of its proper divisors (1583410640).

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

769699840 is a wasteful number, since it uses less digits than its factorization.

769699840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 58.

The square root of 769699840 is about 27743.4648160607. The cubic root of 769699840 is about 916.4465319697.

The spelling of 769699840 in words is "seven hundred sixty-nine million, six hundred ninety-nine thousand, eight hundred forty".