72566031 has 8 divisors (see below), whose sum is σ = 97015600. Its totient is φ = 48246912.

The previous prime is 72566029. The next prime is 72566041. The reversal of 72566031 is 13066527.

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

It is not a de Polignac number, because 72566031 - 2¹ = 72566029 is a prime.

It is a super-2 number, since 2×72566031² = 10531657710185922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72566031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72566041) 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, 31306 + ... + 33543.

It is an arithmetic number, because the mean of its divisors is an integer number (12126950).

Almost surely, 2^72566031 is an apocalyptic number.

72566031 is a deficient number, since it is larger than the sum of its proper divisors (24449569).

72566031 is a wasteful number, since it uses less digits than its factorization.

72566031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65225.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 72566031 is about 8518.5697743224. The cubic root of 72566031 is about 417.1040979065.

The spelling of 72566031 in words is "seventy-two million, five hundred sixty-six thousand, thirty-one".