71490623 has 8 divisors (see below), whose sum is σ = 73548240. Its totient is φ = 69439680.

The previous prime is 71490607. The next prime is 71490637. The reversal of 71490623 is 32609417.

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 71490623 - 2⁴ = 71490607 is a prime.

It is a super-2 number, since 2×71490623² = 10221818353856258, 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 71490623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71420623) 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, 26888 + ... + 29426.

It is an arithmetic number, because the mean of its divisors is an integer number (9193530).

Almost surely, 2^71490623 is an apocalyptic number.

71490623 is a deficient number, since it is larger than the sum of its proper divisors (2057617).

71490623 is a wasteful number, since it uses less digits than its factorization.

71490623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 71490623 is about 8455.2127708296. The cubic root of 71490623 is about 415.0333800024.

The spelling of 71490623 in words is "seventy-one million, four hundred ninety thousand, six hundred twenty-three".