77346990 has 72 divisors (see below), whose sum is σ = 233948520. Its totient is φ = 17678304.

The previous prime is 77346989. The next prime is 77347001. The reversal of 77346990 is 9964377.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 35 ways as a sum of consecutive naturals, for example, 4360 + ... + 13179.

It is an arithmetic number, because the mean of its divisors is an integer number (3249285).

Almost surely, 2^77346990 is an apocalyptic number.

77346990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77346990 is an abundant number, since it is smaller than the sum of its proper divisors (156601530).

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

77346990 is a wasteful number, since it uses less digits than its factorization.

77346990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17566 (or 17556 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 77346990 is about 8794.7137531588. The cubic root of 77346990 is about 426.0701795376.

The spelling of 77346990 in words is "seventy-seven million, three hundred forty-six thousand, nine hundred ninety".