609490755 has 24 divisors (see below), whose sum is σ = 1057278768. Its totient is φ = 324806976.

The previous prime is 609490747. The next prime is 609490757. The reversal of 609490755 is 557094906.

It is a happy number.

It is not a de Polignac number, because 609490755 - 2³ = 609490747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 609490755.

It is not an unprimeable number, because it can be changed into a prime (609490757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62169 + ... + 71301.

It is an arithmetic number, because the mean of its divisors is an integer number (44053282).

Almost surely, 2^609490755 is an apocalyptic number.

609490755 is a deficient number, since it is larger than the sum of its proper divisors (447788013).

609490755 is a wasteful number, since it uses less digits than its factorization.

609490755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10627 (or 10624 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 609490755 is about 24687.8665542408. The cubic root of 609490755 is about 847.8565393624.

The spelling of 609490755 in words is "six hundred nine million, four hundred ninety thousand, seven hundred fifty-five".