74897491 has 8 divisors (see below), whose sum is σ = 77307840. Its totient is φ = 72525288.

The previous prime is 74897479. The next prime is 74897503. The reversal of 74897491 is 19479847.

It is an interprime number because it is at equal distance from previous prime (74897479) and next prime (74897503).

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 74897491 - 2⁷ = 74897363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74898491) 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, 5521 + ... + 13426.

It is an arithmetic number, because the mean of its divisors is an integer number (9663480).

Almost surely, 2^74897491 is an apocalyptic number.

74897491 is a deficient number, since it is larger than the sum of its proper divisors (2410349).

74897491 is a wasteful number, since it uses less digits than its factorization.

74897491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19073.

The product of its digits is 508032, while the sum is 49.

The square root of 74897491 is about 8654.3336543029. Note that the first 3 decimals coincide. The cubic root of 74897491 is about 421.5241129630.

The spelling of 74897491 in words is "seventy-four million, eight hundred ninety-seven thousand, four hundred ninety-one".