7878715604 has 6 divisors (see below), whose sum is σ = 13787752314. Its totient is φ = 3939357800.

The previous prime is 7878715591. The next prime is 7878715633. The reversal of 7878715604 is 4065178787.

It can be written as a sum of positive squares in only one way, i.e., 4455295504 + 3423420100 = 66748^2 + 58510^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984839447 + ... + 984839454.

It is an arithmetic number, because the mean of its divisors is an integer number (2297958719).

Almost surely, 2^7878715604 is an apocalyptic number.

It is an amenable number.

7878715604 is a deficient number, since it is larger than the sum of its proper divisors (5909036710).

7878715604 is a wasteful number, since it uses less digits than its factorization.

7878715604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969678905 (or 1969678903 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 53.

The square root of 7878715604 is about 88762.1293345310. The cubic root of 7878715604 is about 1989.8414563556.

The spelling of 7878715604 in words is "seven billion, eight hundred seventy-eight million, seven hundred fifteen thousand, six hundred four".