601506881 has 4 divisors (see below), whose sum is σ = 602168064. Its totient is φ = 600845700.

The previous prime is 601506877. The next prime is 601506931. The reversal of 601506881 is 188605106.

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 601506881 - 2² = 601506877 is a prime.

It is a super-2 number, since 2×601506881² = 723621055780696322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (601506821) 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, 329225 + ... + 331046.

It is an arithmetic number, because the mean of its divisors is an integer number (150542016).

Almost surely, 2^601506881 is an apocalyptic number.

It is an amenable number.

601506881 is a deficient number, since it is larger than the sum of its proper divisors (661183).

601506881 is an equidigital number, since it uses as much as digits as its factorization.

601506881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661182.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 601506881 is about 24525.6372190408. The cubic root of 601506881 is about 844.1381598320.

The spelling of 601506881 in words is "six hundred one million, five hundred six thousand, eight hundred eighty-one".