77713242 has 8 divisors (see below), whose sum is σ = 155426496. Its totient is φ = 25904412.

The previous prime is 77713241. The next prime is 77713267. The reversal of 77713242 is 24231777.

It is a sphenic number, since it is the product of 3 distinct primes.

77713242 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (77713241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6476098 + ... + 6476109.

It is an arithmetic number, because the mean of its divisors is an integer number (19428312).

Almost surely, 2^77713242 is an apocalyptic number.

77713242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77713242 is a wasteful number, since it uses less digits than its factorization.

77713242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12952212.

The product of its digits is 16464, while the sum is 33.

The square root of 77713242 is about 8815.5114429056. The cubic root of 77713242 is about 426.7416273188.

The spelling of 77713242 in words is "seventy-seven million, seven hundred thirteen thousand, two hundred forty-two".