74354649 has 4 divisors (see below), whose sum is σ = 99139536. Its totient is φ = 49569764.

The previous prime is 74354641. The next prime is 74354663. The reversal of 74354649 is 94645347.

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 74354649 - 2³ = 74354641 is a prime.

It is a super-2 number, since 2×74354649² = 11057227655826402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74354649.

It is not an unprimeable number, because it can be changed into a prime (74354641) 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, 12392439 + ... + 12392444.

It is an arithmetic number, because the mean of its divisors is an integer number (24784884).

Almost surely, 2^74354649 is an apocalyptic number.

It is an amenable number.

74354649 is a deficient number, since it is larger than the sum of its proper divisors (24784887).

74354649 is a wasteful number, since it uses less digits than its factorization.

74354649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24784886.

The product of its digits is 362880, while the sum is 42.

The square root of 74354649 is about 8622.9141825719. The cubic root of 74354649 is about 420.5032685953.

The spelling of 74354649 in words is "seventy-four million, three hundred fifty-four thousand, six hundred forty-nine".