74517445 has 8 divisors (see below), whose sum is σ = 91837944. Its totient is φ = 58002624.

The previous prime is 74517439. The next prime is 74517479. The reversal of 74517445 is 54471547.

It can be written as a sum of positive squares in 4 ways, for example, as 45454564 + 29062881 = 6742^2 + 5391^2 .

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 74517445 - 2¹⁵ = 74484677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201214 + ... + 201583.

It is an arithmetic number, because the mean of its divisors is an integer number (11479743).

Almost surely, 2^74517445 is an apocalyptic number.

It is an amenable number.

74517445 is a deficient number, since it is larger than the sum of its proper divisors (17320499).

74517445 is a wasteful number, since it uses less digits than its factorization.

74517445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402839.

The product of its digits is 78400, while the sum is 37.

The square root of 74517445 is about 8632.3487533811. The cubic root of 74517445 is about 420.8099355899.

The spelling of 74517445 in words is "seventy-four million, five hundred seventeen thousand, four hundred forty-five".