74690993 has 4 divisors (see below), whose sum is σ = 80436468. Its totient is φ = 68945520.

The previous prime is 74690989. The next prime is 74690999. The reversal of 74690993 is 39909647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30162064 + 44528929 = 5492^2 + 6673^2 .

It is a cyclic number.

It is not a de Polignac number, because 74690993 - 2² = 74690989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74690999) 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, 2872718 + ... + 2872743.

It is an arithmetic number, because the mean of its divisors is an integer number (20109117).

Almost surely, 2^74690993 is an apocalyptic number.

It is an amenable number.

74690993 is a deficient number, since it is larger than the sum of its proper divisors (5745475).

74690993 is a wasteful number, since it uses less digits than its factorization.

74690993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745474.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 74690993 is about 8642.3950962682. The cubic root of 74690993 is about 421.1363651965.

The spelling of 74690993 in words is "seventy-four million, six hundred ninety thousand, nine hundred ninety-three".