661104753 has 16 divisors (see below), whose sum is σ = 928512000. Its totient is φ = 417249360.

The previous prime is 661104751. The next prime is 661104781. The reversal of 661104753 is 357401166.

It is not a de Polignac number, because 661104753 - 2¹ = 661104751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (661104751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103548 + ... + 109746.

It is an arithmetic number, because the mean of its divisors is an integer number (58032000).

Almost surely, 2^661104753 is an apocalyptic number.

It is an amenable number.

661104753 is a deficient number, since it is larger than the sum of its proper divisors (267407247).

661104753 is a wasteful number, since it uses less digits than its factorization.

661104753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8092.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 661104753 is about 25711.9573933997. The cubic root of 661104753 is about 871.1442876570.

The spelling of 661104753 in words is "six hundred sixty-one million, one hundred four thousand, seven hundred fifty-three".