72066471 has 16 divisors (see below), whose sum is σ = 97109760. Its totient is φ = 47537280.

The previous prime is 72066469. The next prime is 72066497. The reversal of 72066471 is 17466027.

It is not a de Polignac number, because 72066471 - 2¹ = 72066469 is a prime.

It is a super-3 number, since 3×72066471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72066431) 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, 189960 + ... + 190338.

It is an arithmetic number, because the mean of its divisors is an integer number (6069360).

Almost surely, 2^72066471 is an apocalyptic number.

72066471 is a deficient number, since it is larger than the sum of its proper divisors (25043289).

72066471 is a wasteful number, since it uses less digits than its factorization.

72066471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 72066471 is about 8489.1973118782. The cubic root of 72066471 is about 416.1447486145.

The spelling of 72066471 in words is "seventy-two million, sixty-six thousand, four hundred seventy-one".