74405671 has 4 divisors (see below), whose sum is σ = 74575600. Its totient is φ = 74235744.

The previous prime is 74405663. The next prime is 74405701. The reversal of 74405671 is 17650447.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17650447 = 3301 ⋅5347.

It is a cyclic number.

It is not a de Polignac number, because 74405671 - 2³ = 74405663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74405971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84306 + ... + 85183.

It is an arithmetic number, because the mean of its divisors is an integer number (18643900).

Almost surely, 2^74405671 is an apocalyptic number.

74405671 is a deficient number, since it is larger than the sum of its proper divisors (169929).

74405671 is a wasteful number, since it uses less digits than its factorization.

74405671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169928.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 74405671 is about 8625.8721877848. The cubic root of 74405671 is about 420.5994294160.

It can be divided in two parts, 74405 and 671, that added together give a square (75076 = 274²).

The spelling of 74405671 in words is "seventy-four million, four hundred five thousand, six hundred seventy-one".