77343725 has 12 divisors (see below), whose sum is σ = 99214260. Its totient is φ = 59740800.

The previous prime is 77343697. The next prime is 77343757. The reversal of 77343725 is 52734377.

It can be written as a sum of positive squares in 6 ways, for example, as 15217801 + 62125924 = 3901^2 + 7882^2 .

It is not a de Polignac number, because 77343725 - 2¹⁰ = 77342701 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52616 + ... + 54065.

It is an arithmetic number, because the mean of its divisors is an integer number (8267855).

Almost surely, 2^77343725 is an apocalyptic number.

It is an amenable number.

77343725 is a deficient number, since it is larger than the sum of its proper divisors (21870535).

77343725 is a wasteful number, since it uses less digits than its factorization.

77343725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106720 (or 106715 counting only the distinct ones).

The product of its digits is 123480, while the sum is 38.

The square root of 77343725 is about 8794.5281283307. The cubic root of 77343725 is about 426.0641843088.

It can be divided in two parts, 7734372 and 5, that added together give a palindrome (7734377).

The spelling of 77343725 in words is "seventy-seven million, three hundred forty-three thousand, seven hundred twenty-five".