77346642 has 16 divisors (see below), whose sum is σ = 154963872. Its totient is φ = 25737120.

The previous prime is 77346641. The next prime is 77346653. The reversal of 77346642 is 24664377.

It is a self number, because there is not a number n which added to its sum of digits gives 77346642.

It is not an unprimeable number, because it can be changed into a prime (77346641) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7459 + ... + 14502.

It is an arithmetic number, because the mean of its divisors is an integer number (9685242).

Almost surely, 2^77346642 is an apocalyptic number.

77346642 is an abundant number, since it is smaller than the sum of its proper divisors (77617230).

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

77346642 is a wasteful number, since it uses less digits than its factorization.

77346642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22553.

The product of its digits is 169344, while the sum is 39.

The square root of 77346642 is about 8794.6939685244. The cubic root of 77346642 is about 426.0695405442.

The spelling of 77346642 in words is "seventy-seven million, three hundred forty-six thousand, six hundred forty-two".