74642407 has 8 divisors (see below), whose sum is σ = 85800096. Its totient is φ = 63608352.

The previous prime is 74642401. The next prime is 74642413. The reversal of 74642407 is 70424647.

It is an interprime number because it is at equal distance from previous prime (74642401) and next prime (74642413).

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 74642407 - 2²³ = 66253799 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 (74642401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29608 + ... + 32029.

It is an arithmetic number, because the mean of its divisors is an integer number (10725012).

Almost surely, 2^74642407 is an apocalyptic number.

74642407 is a deficient number, since it is larger than the sum of its proper divisors (11157689).

74642407 is a wasteful number, since it uses less digits than its factorization.

74642407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61817.

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 74642407 is about 8639.5837283980. The cubic root of 74642407 is about 421.0450299102.

The spelling of 74642407 in words is "seventy-four million, six hundred forty-two thousand, four hundred seven".