661052203 has 8 divisors (see below), whose sum is σ = 759856608. Its totient is φ = 563339904.

The previous prime is 661052173. The next prime is 661052233. The reversal of 661052203 is 302250166.

It is an interprime number because it is at equal distance from previous prime (661052173) and next prime (661052233).

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

It is a cyclic number.

It is not a de Polignac number, because 661052203 - 2²⁵ = 627497771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (661052233) 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, 271726 + ... + 274147.

It is an arithmetic number, because the mean of its divisors is an integer number (94982076).

Almost surely, 2^661052203 is an apocalyptic number.

661052203 is a deficient number, since it is larger than the sum of its proper divisors (98804405).

661052203 is a wasteful number, since it uses less digits than its factorization.

661052203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546053.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 661052203 is about 25710.9354750075. The cubic root of 661052203 is about 871.1212051600.

The spelling of 661052203 in words is "six hundred sixty-one million, fifty-two thousand, two hundred three".