78607642 has 8 divisors (see below), whose sum is σ = 117956736. Its totient is φ = 39288732.

The previous prime is 78607601. The next prime is 78607649. The reversal of 78607642 is 24670687.

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

It is a super-2 number, since 2×78607642² = 12358322761600328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78607595 and 78607604.

It is not an unprimeable number, because it can be changed into a prime (78607649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823 + ... + 12565.

It is an arithmetic number, because the mean of its divisors is an integer number (14744592).

Almost surely, 2^78607642 is an apocalyptic number.

78607642 is a deficient number, since it is larger than the sum of its proper divisors (39349094).

78607642 is a wasteful number, since it uses less digits than its factorization.

78607642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15092.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 78607642 is about 8866.0950818272. The cubic root of 78607642 is about 428.3725066580.

The spelling of 78607642 in words is "seventy-eight million, six hundred seven thousand, six hundred forty-two".