661124265 has 8 divisors (see below), whose sum is σ = 1057798848. Its totient is φ = 352599600.

The previous prime is 661124263. The next prime is 661124267. The reversal of 661124265 is 562421166.

It is an interprime number because it is at equal distance from previous prime (661124263) and next prime (661124267).

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

It is not a de Polignac number, because 661124265 - 2¹ = 661124263 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (661124263) 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, 22037461 + ... + 22037490.

It is an arithmetic number, because the mean of its divisors is an integer number (132224856).

Almost surely, 2^661124265 is an apocalyptic number.

It is an amenable number.

661124265 is a deficient number, since it is larger than the sum of its proper divisors (396674583).

661124265 is a wasteful number, since it uses less digits than its factorization.

661124265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44074959.

The product of its digits is 17280, while the sum is 33.

The square root of 661124265 is about 25712.3368249562. The cubic root of 661124265 is about 871.1528579580.

It can be divided in two parts, 6611 and 24265, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 661124265 in words is "six hundred sixty-one million, one hundred twenty-four thousand, two hundred sixty-five".