1506660601 has 4 divisors (see below), whose sum is σ = 1508689152. Its totient is φ = 1504632052.

The previous prime is 1506660593. The next prime is 1506660647. The reversal of 1506660601 is 1060666051.

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 1506660601 - 2³ = 1506660593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1506660401) 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, 1013161 + ... + 1014646.

It is an arithmetic number, because the mean of its divisors is an integer number (377172288).

Almost surely, 2^1506660601 is an apocalyptic number.

It is an amenable number.

1506660601 is a deficient number, since it is larger than the sum of its proper divisors (2028551).

1506660601 is an equidigital number, since it uses as much as digits as its factorization.

1506660601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028550.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1506660601 is about 38815.7262072990. The cubic root of 1506660601 is about 1146.4060708489.

The spelling of 1506660601 in words is "one billion, five hundred six million, six hundred sixty thousand, six hundred one".