77613742 has 4 divisors (see below), whose sum is σ = 116420616. Its totient is φ = 38806870.

The previous prime is 77613737. The next prime is 77613749. The reversal of 77613742 is 24731677.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77613749) by changing a digit.

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 as a sum of consecutive naturals, namely, 19403434 + ... + 19403437.

It is an arithmetic number, because the mean of its divisors is an integer number (29105154).

Almost surely, 2^77613742 is an apocalyptic number.

77613742 is a deficient number, since it is larger than the sum of its proper divisors (38806874).

77613742 is a wasteful number, since it uses less digits than its factorization.

77613742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38806873.

The product of its digits is 49392, while the sum is 37.

The square root of 77613742 is about 8809.8661737849. The cubic root of 77613742 is about 426.5594235946.

The spelling of 77613742 in words is "seventy-seven million, six hundred thirteen thousand, seven hundred forty-two".