78072567 has 4 divisors (see below), whose sum is σ = 104096760. Its totient is φ = 52048376.

The previous prime is 78072541. The next prime is 78072607. The reversal of 78072567 is 76527087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78072567 - 2⁶ = 78072503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78070567) 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, 13012092 + ... + 13012097.

It is an arithmetic number, because the mean of its divisors is an integer number (26024190).

Almost surely, 2^78072567 is an apocalyptic number.

78072567 is a deficient number, since it is larger than the sum of its proper divisors (26024193).

78072567 is a wasteful number, since it uses less digits than its factorization.

78072567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26024192.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 78072567 is about 8835.8682086143. The cubic root of 78072567 is about 427.3983288192.

The spelling of 78072567 in words is "seventy-eight million, seventy-two thousand, five hundred sixty-seven".