74290609 has 2 divisors, whose sum is σ = 74290610. Its totient is φ = 74290608.

The previous prime is 74290603. The next prime is 74290631. The reversal of 74290609 is 90609247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 26749584 = 6895^2 + 5172^2 .

It is a cyclic number.

It is not a de Polignac number, because 74290609 - 2¹¹ = 74288561 is a prime.

It is not a weakly prime, because it can be changed into another prime (74290603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37145304 + 37145305.

It is an arithmetic number, because the mean of its divisors is an integer number (37145305).

Almost surely, 2^74290609 is an apocalyptic number.

It is an amenable number.

74290609 is a deficient number, since it is larger than the sum of its proper divisors (1).

74290609 is an equidigital number, since it uses as much as digits as its factorization.

74290609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 74290609 is about 8619.2000208836. The cubic root of 74290609 is about 420.3825105593.

The spelling of 74290609 in words is "seventy-four million, two hundred ninety thousand, six hundred nine".