78259607 has 4 divisors (see below), whose sum is σ = 78326400. Its totient is φ = 78192816.

The previous prime is 78259591. The next prime is 78259609. The reversal of 78259607 is 70695287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70695287 = 13 ⋅5438099.

It is a cyclic number.

It is not a de Polignac number, because 78259607 - 2⁴ = 78259591 is a prime.

It is a super-2 number, since 2×78259607² = 12249132175588898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78259609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31607 + ... + 33992.

It is an arithmetic number, because the mean of its divisors is an integer number (19581600).

Almost surely, 2^78259607 is an apocalyptic number.

78259607 is a deficient number, since it is larger than the sum of its proper divisors (66793).

78259607 is a wasteful number, since it uses less digits than its factorization.

78259607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66792.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 78259607 is about 8846.4460095566. The cubic root of 78259607 is about 427.7393655107.

The spelling of 78259607 in words is "seventy-eight million, two hundred fifty-nine thousand, six hundred seven".