72067157 has 16 divisors (see below), whose sum is σ = 77425152. Its totient is φ = 66951360.

The previous prime is 72067153. The next prime is 72067181. The reversal of 72067157 is 75176027.

It is a cyclic number.

It is not a de Polignac number, because 72067157 - 2² = 72067153 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 (72067153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94823 + ... + 95579.

It is an arithmetic number, because the mean of its divisors is an integer number (4839072).

Almost surely, 2^72067157 is an apocalyptic number.

It is an amenable number.

72067157 is a deficient number, since it is larger than the sum of its proper divisors (5357995).

72067157 is a wasteful number, since it uses less digits than its factorization.

72067157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 72067157 is about 8489.2377160732. The cubic root of 72067157 is about 416.1460690361.

The spelling of 72067157 in words is "seventy-two million, sixty-seven thousand, one hundred fifty-seven".