77633742 has 16 divisors (see below), whose sum is σ = 155525760. Its totient is φ = 25834872.

The previous prime is 77633737. The next prime is 77633761. The reversal of 77633742 is 24733677.

It is a self number, because there is not a number n which added to its sum of digits gives 77633742.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 6738 + ... + 14165.

It is an arithmetic number, because the mean of its divisors is an integer number (9720360).

Almost surely, 2^77633742 is an apocalyptic number.

77633742 is an abundant number, since it is smaller than the sum of its proper divisors (77892018).

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

77633742 is a wasteful number, since it uses less digits than its factorization.

77633742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21527.

The product of its digits is 148176, while the sum is 39.

The square root of 77633742 is about 8811.0011916921. The cubic root of 77633742 is about 426.5960599580.

The spelling of 77633742 in words is "seventy-seven million, six hundred thirty-three thousand, seven hundred forty-two".