78612297 has 8 divisors (see below), whose sum is σ = 104859744. Its totient is φ = 52386528.

The previous prime is 78612283. The next prime is 78612319. The reversal of 78612297 is 79221687.

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

It is not a de Polignac number, because 78612297 - 2¹¹ = 78610249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78612227) 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, 7333 + ... + 14525.

It is an arithmetic number, because the mean of its divisors is an integer number (13107468).

Almost surely, 2^78612297 is an apocalyptic number.

It is an amenable number.

78612297 is a deficient number, since it is larger than the sum of its proper divisors (26247447).

78612297 is a wasteful number, since it uses less digits than its factorization.

78612297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10839.

The product of its digits is 84672, while the sum is 42.

The square root of 78612297 is about 8866.3575948639. The cubic root of 78612297 is about 428.3809623018.

The spelling of 78612297 in words is "seventy-eight million, six hundred twelve thousand, two hundred ninety-seven".