77725705 has 8 divisors (see below), whose sum is σ = 93627072. Its totient is φ = 61943088.

The previous prime is 77725691. The next prime is 77725721. The reversal of 77725705 is 50752777.

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 77725705 - 2⁵ = 77725673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28239 + ... + 30868.

It is an arithmetic number, because the mean of its divisors is an integer number (11703384).

Almost surely, 2^77725705 is an apocalyptic number.

It is an amenable number.

77725705 is a deficient number, since it is larger than the sum of its proper divisors (15901367).

77725705 is a wasteful number, since it uses less digits than its factorization.

77725705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59375.

The product of its (nonzero) digits is 120050, while the sum is 40.

The square root of 77725705 is about 8816.2182935769. The cubic root of 77725705 is about 426.7644385175.

The spelling of 77725705 in words is "seventy-seven million, seven hundred twenty-five thousand, seven hundred five".