78473717 has 16 divisors (see below), whose sum is σ = 96577920. Its totient is φ = 62227968.

The previous prime is 78473699. The next prime is 78473749. The reversal of 78473717 is 71737487.

It is a cyclic number.

It is not a de Polignac number, because 78473717 - 2⁶ = 78473653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78473767) 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, 1433 + ... + 12609.

It is an arithmetic number, because the mean of its divisors is an integer number (6036120).

Almost surely, 2^78473717 is an apocalyptic number.

It is an amenable number.

78473717 is a deficient number, since it is larger than the sum of its proper divisors (18104203).

78473717 is a wasteful number, since it uses less digits than its factorization.

78473717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11260.

The product of its digits is 230496, while the sum is 44.

The square root of 78473717 is about 8858.5392136627. The cubic root of 78473717 is about 428.1290935158.

The spelling of 78473717 in words is "seventy-eight million, four hundred seventy-three thousand, seven hundred seventeen".