78915061 has 8 divisors (see below), whose sum is σ = 81825120. Its totient is φ = 76017648.

The previous prime is 78915059. The next prime is 78915073. The reversal of 78915061 is 16051987.

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 78915061 - 2¹ = 78915059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78915061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78915041) 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, 10630 + ... + 16456.

It is an arithmetic number, because the mean of its divisors is an integer number (10228140).

Almost surely, 2^78915061 is an apocalyptic number.

It is an amenable number.

78915061 is a deficient number, since it is larger than the sum of its proper divisors (2910059).

78915061 is a wasteful number, since it uses less digits than its factorization.

78915061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6323.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 78915061 is about 8883.4149402130. The cubic root of 78915061 is about 428.9302070939.

The spelling of 78915061 in words is "seventy-eight million, nine hundred fifteen thousand, sixty-one".