74891761 has 8 divisors (see below), whose sum is σ = 86391360. Its totient is φ = 63592368.

The previous prime is 74891743. The next prime is 74891777. The reversal of 74891761 is 16719847.

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

It is not a de Polignac number, because 74891761 - 2¹¹ = 74889713 is a prime.

It is a super-2 number, since 2×74891761² = 11217551731362242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74891701) 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, 49246 + ... + 50743.

It is an arithmetic number, because the mean of its divisors is an integer number (10798920).

Almost surely, 2^74891761 is an apocalyptic number.

It is an amenable number.

74891761 is a deficient number, since it is larger than the sum of its proper divisors (11499599).

74891761 is a wasteful number, since it uses less digits than its factorization.

74891761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100103.

The product of its digits is 84672, while the sum is 43.

The square root of 74891761 is about 8654.0025999534. The cubic root of 74891761 is about 421.5133631825.

The spelling of 74891761 in words is "seventy-four million, eight hundred ninety-one thousand, seven hundred sixty-one".