78607641 has 32 divisors (see below), whose sum is σ = 124121088. Its totient is φ = 43320960.

The previous prime is 78607601. The next prime is 78607649. The reversal of 78607641 is 14670687.

It is not a de Polignac number, because 78607641 - 2⁶ = 78607577 is a prime.

It is a super-2 number, since 2×78607641² = 12358322447169762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78607641.

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 31 ways as a sum of consecutive naturals, for example, 71506 + ... + 72596.

It is an arithmetic number, because the mean of its divisors is an integer number (3878784).

Almost surely, 2^78607641 is an apocalyptic number.

It is an amenable number.

78607641 is a deficient number, since it is larger than the sum of its proper divisors (45513447).

78607641 is a wasteful number, since it uses less digits than its factorization.

78607641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 78607641 is about 8866.0950254326. The cubic root of 78607641 is about 428.3725048415.

The spelling of 78607641 in words is "seventy-eight million, six hundred seven thousand, six hundred forty-one".