72151707 has 8 divisors (see below), whose sum is σ = 96586560. Its totient is φ = 47909000.

The previous prime is 72151693. The next prime is 72151733. The reversal of 72151707 is 70715127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72151707 - 2⁶ = 72151643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72151747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47157 + ... + 48662.

It is an arithmetic number, because the mean of its divisors is an integer number (12073320).

Almost surely, 2^72151707 is an apocalyptic number.

72151707 is a deficient number, since it is larger than the sum of its proper divisors (24434853).

72151707 is a wasteful number, since it uses less digits than its factorization.

72151707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96073.

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 72151707 is about 8494.2160909645. The cubic root of 72151707 is about 416.3087478517.

The spelling of 72151707 in words is "seventy-two million, one hundred fifty-one thousand, seven hundred seven".