78704572 has 6 divisors (see below), whose sum is σ = 137733008. Its totient is φ = 39352284.

The previous prime is 78704519. The next prime is 78704573. The reversal of 78704572 is 27540787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78704573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9838068 + ... + 9838075.

Almost surely, 2^78704572 is an apocalyptic number.

It is an amenable number.

78704572 is a deficient number, since it is larger than the sum of its proper divisors (59028436).

78704572 is a wasteful number, since it uses less digits than its factorization.

78704572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19676147 (or 19676145 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 78704572 is about 8871.5597275789. The cubic root of 78704572 is about 428.5485077477.

The spelling of 78704572 in words is "seventy-eight million, seven hundred four thousand, five hundred seventy-two".