74720765 has 8 divisors (see below), whose sum is σ = 102474240. Its totient is φ = 51237072.

The previous prime is 74720761. The next prime is 74720771. The reversal of 74720765 is 56702747.

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

It is a cyclic number.

It is not a de Polignac number, because 74720765 - 2² = 74720761 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74720761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067405 + ... + 1067474.

It is an arithmetic number, because the mean of its divisors is an integer number (12809280).

Almost surely, 2^74720765 is an apocalyptic number.

It is an amenable number.

74720765 is a deficient number, since it is larger than the sum of its proper divisors (27753475).

74720765 is a wasteful number, since it uses less digits than its factorization.

74720765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134891.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 74720765 is about 8644.1173638492. The cubic root of 74720765 is about 421.1923130685.

It can be divided in two parts, 747 and 20765, that added together give a palindrome (21512).

The spelling of 74720765 in words is "seventy-four million, seven hundred twenty thousand, seven hundred sixty-five".