72146167 has 4 divisors (see below), whose sum is σ = 72255976. Its totient is φ = 72036360.

The previous prime is 72146149. The next prime is 72146177. The reversal of 72146167 is 76164127.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72146167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72146117) 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, 53913 + ... + 55234.

It is an arithmetic number, because the mean of its divisors is an integer number (18063994).

Almost surely, 2^72146167 is an apocalyptic number.

72146167 is a deficient number, since it is larger than the sum of its proper divisors (109809).

72146167 is a wasteful number, since it uses less digits than its factorization.

72146167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109808.

The product of its digits is 14112, while the sum is 34.

The square root of 72146167 is about 8493.8899804507. The cubic root of 72146167 is about 416.2980924813.

The spelling of 72146167 in words is "seventy-two million, one hundred forty-six thousand, one hundred sixty-seven".