661152703 has 4 divisors (see below), whose sum is σ = 661671720. Its totient is φ = 660633688.

The previous prime is 661152697. The next prime is 661152719. The reversal of 661152703 is 307251166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 661152703 - 2¹³ = 661144511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661152103) 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, 257593 + ... + 260146.

It is an arithmetic number, because the mean of its divisors is an integer number (165417930).

Almost surely, 2^661152703 is an apocalyptic number.

661152703 is a deficient number, since it is larger than the sum of its proper divisors (519017).

661152703 is a wasteful number, since it uses less digits than its factorization.

661152703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519016.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 661152703 is about 25712.8898220328. The cubic root of 661152703 is about 871.1653485446.

The spelling of 661152703 in words is "six hundred sixty-one million, one hundred fifty-two thousand, seven hundred three".