77604125 has 16 divisors (see below), whose sum is σ = 97105008. Its totient is φ = 61920000.

The previous prime is 77604119. The next prime is 77604127. The reversal of 77604125 is 52140677.

It can be written as a sum of positive squares in 8 ways, for example, as 1094116 + 76510009 = 1046^2 + 8747^2 .

It is not a de Polignac number, because 77604125 - 2¹⁸ = 77341981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77604091 and 77604100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77604127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74609 + ... + 75641.

It is an arithmetic number, because the mean of its divisors is an integer number (6069063).

Almost surely, 2^77604125 is an apocalyptic number.

It is an amenable number.

77604125 is a deficient number, since it is larger than the sum of its proper divisors (19500883).

77604125 is a wasteful number, since it uses less digits than its factorization.

77604125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1639 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 77604125 is about 8809.3203483583. The cubic root of 77604125 is about 426.5418047584.

The spelling of 77604125 in words is "seventy-seven million, six hundred four thousand, one hundred twenty-five".