74290805 has 16 divisors (see below), whose sum is σ = 93273984. Its totient is φ = 56696640.

The previous prime is 74290793. The next prime is 74290807. The reversal of 74290805 is 50809247.

It is a happy number.

It is not a de Polignac number, because 74290805 - 2¹⁰ = 74289781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74290807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62315 + ... + 63495.

It is an arithmetic number, because the mean of its divisors is an integer number (5829624).

Almost surely, 2^74290805 is an apocalyptic number.

It is an amenable number.

74290805 is a deficient number, since it is larger than the sum of its proper divisors (18983179).

74290805 is a wasteful number, since it uses less digits than its factorization.

74290805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 74290805 is about 8619.2113908408. The cubic root of 74290805 is about 420.3828802556.

The spelling of 74290805 in words is "seventy-four million, two hundred ninety thousand, eight hundred five".