78485656 has 32 divisors (see below), whose sum is σ = 156078000. Its totient is φ = 36896256.

The previous prime is 78485653. The next prime is 78485681. The reversal of 78485656 is 65658487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78485653) 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, 18940 + ... + 22708.

Almost surely, 2^78485656 is an apocalyptic number.

78485656 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

78485656 is a deficient number, since it is larger than the sum of its proper divisors (77592344).

78485656 is a wasteful number, since it uses less digits than its factorization.

78485656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931 (or 3927 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 49.

The square root of 78485656 is about 8859.2130576028. The cubic root of 78485656 is about 428.1508042841.

The spelling of 78485656 in words is "seventy-eight million, four hundred eighty-five thousand, six hundred fifty-six".