77740830 has 64 divisors (see below), whose sum is σ = 219516480. Its totient is φ = 19510272.

The previous prime is 77740801. The next prime is 77740843. The reversal of 77740830 is 3804777.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3879 + ... + 13058.

It is an arithmetic number, because the mean of its divisors is an integer number (3429945).

Almost surely, 2^77740830 is an apocalyptic number.

77740830 is an abundant number, since it is smaller than the sum of its proper divisors (141775650).

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

77740830 is a wasteful number, since it uses less digits than its factorization.

77740830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16970 (or 16964 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 77740830 is about 8817.0760459463. The cubic root of 77740830 is about 426.7921187360.

The spelling of 77740830 in words is "seventy-seven million, seven hundred forty thousand, eight hundred thirty".