77601402 has 80 divisors (see below), whose sum is σ = 185042880. Its totient is φ = 24254208.

The previous prime is 77601323. The next prime is 77601427. The reversal of 77601402 is 20410677.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 219658 + ... + 220010.

It is an arithmetic number, because the mean of its divisors is an integer number (2313036).

Almost surely, 2^77601402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77601402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92521440).

77601402 is an abundant number, since it is smaller than the sum of its proper divisors (107441478).

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

77601402 is a wasteful number, since it uses less digits than its factorization.

77601402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 77601402 is about 8809.1657947844. The cubic root of 77601402 is about 426.5368158186.

The spelling of 77601402 in words is "seventy-seven million, six hundred one thousand, four hundred two".