601716561 has 8 divisors (see below), whose sum is σ = 802648704. Its totient is φ = 400964400.

The previous prime is 601716539. The next prime is 601716601. The reversal of 601716561 is 165617106.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 601716561 - 2⁶ = 601716497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (601716461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36990 + ... + 50711.

It is an arithmetic number, because the mean of its divisors is an integer number (100331088).

Almost surely, 2^601716561 is an apocalyptic number.

It is an amenable number.

601716561 is a deficient number, since it is larger than the sum of its proper divisors (200932143).

601716561 is a wasteful number, since it uses less digits than its factorization.

601716561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89991.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 601716561 is about 24529.9115571174. The cubic root of 601716561 is about 844.2362348123.

It can be divided in two parts, 6017 and 16561, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 601716561 in words is "six hundred one million, seven hundred sixteen thousand, five hundred sixty-one".