74945245 has 8 divisors (see below), whose sum is σ = 90077184. Its totient is φ = 59860944.

The previous prime is 74945243. The next prime is 74945279. The reversal of 74945245 is 54254947.

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 74945245 - 2¹ = 74945243 is a prime.

It is a super-2 number, since 2×74945245² = 11233579496220050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74945198 and 74945207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74945243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8349 + ... + 14818.

It is an arithmetic number, because the mean of its divisors is an integer number (11259648).

Almost surely, 2^74945245 is an apocalyptic number.

It is an amenable number.

74945245 is a deficient number, since it is larger than the sum of its proper divisors (15131939).

74945245 is a wasteful number, since it uses less digits than its factorization.

74945245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23819.

The product of its digits is 201600, while the sum is 40.

The square root of 74945245 is about 8657.0921792482. The cubic root of 74945245 is about 421.6136806535.

The spelling of 74945245 in words is "seventy-four million, nine hundred forty-five thousand, two hundred forty-five".