74760221 has 4 divisors (see below), whose sum is σ = 76350912. Its totient is φ = 73169532.

The previous prime is 74760209. The next prime is 74760223. The reversal of 74760221 is 12206747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74760221 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 (74760223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795275 + ... + 795368.

It is an arithmetic number, because the mean of its divisors is an integer number (19087728).

Almost surely, 2^74760221 is an apocalyptic number.

It is an amenable number.

74760221 is a deficient number, since it is larger than the sum of its proper divisors (1590691).

74760221 is a wasteful number, since it uses less digits than its factorization.

74760221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590690.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 74760221 is about 8646.3993083827. The cubic root of 74760221 is about 421.2664363265.

Adding to 74760221 its reverse (12206747), we get a palindrome (86966968).

The spelling of 74760221 in words is "seventy-four million, seven hundred sixty thousand, two hundred twenty-one".