74473381 has 4 divisors (see below), whose sum is σ = 75584992. Its totient is φ = 73361772.

The previous prime is 74473367. The next prime is 74473387. The reversal of 74473381 is 18337447.

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 not a de Polignac number, because 74473381 - 2⁵ = 74473349 is a prime.

It is a super-2 number, since 2×74473381² = 11092568955142322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74473381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74473387) 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, 555705 + ... + 555838.

It is an arithmetic number, because the mean of its divisors is an integer number (18896248).

Almost surely, 2^74473381 is an apocalyptic number.

It is an amenable number.

74473381 is a deficient number, since it is larger than the sum of its proper divisors (1111611).

74473381 is a wasteful number, since it uses less digits than its factorization.

74473381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111610.

The product of its digits is 56448, while the sum is 37.

The square root of 74473381 is about 8629.7961157840. The cubic root of 74473381 is about 420.7269741433.

The spelling of 74473381 in words is "seventy-four million, four hundred seventy-three thousand, three hundred eighty-one".