78625653 has 8 divisors (see below), whose sum is σ = 104897568. Its totient is φ = 52385424.

The previous prime is 78625649. The next prime is 78625669. The reversal of 78625653 is 35652687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78625653 - 2² = 78625649 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78625643) 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, 1351 + ... + 12612.

It is an arithmetic number, because the mean of its divisors is an integer number (13112196).

Almost surely, 2^78625653 is an apocalyptic number.

It is an amenable number.

78625653 is a deficient number, since it is larger than the sum of its proper divisors (26271915).

78625653 is a wasteful number, since it uses less digits than its factorization.

78625653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15843.

The product of its digits is 302400, while the sum is 42.

The square root of 78625653 is about 8867.1107470246. The cubic root of 78625653 is about 428.4052211534.

The spelling of 78625653 in words is "seventy-eight million, six hundred twenty-five thousand, six hundred fifty-three".