609745501 has 4 divisors (see below), whose sum is σ = 609939072. Its totient is φ = 609551932.

The previous prime is 609745469. The next prime is 609745517. The reversal of 609745501 is 105547906.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 609745501 - 2⁵ = 609745469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609745531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91981 + ... + 98386.

It is an arithmetic number, because the mean of its divisors is an integer number (152484768).

It is a 3150-hyperperfect number.

Almost surely, 2^609745501 is an apocalyptic number.

It is an amenable number.

609745501 is a deficient number, since it is larger than the sum of its proper divisors (193571).

609745501 is a wasteful number, since it uses less digits than its factorization.

609745501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193570.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 609745501 is about 24693.0253513011. The cubic root of 609745501 is about 847.9746477862.

The spelling of 609745501 in words is "six hundred nine million, seven hundred forty-five thousand, five hundred one".