661034235 has 32 divisors (see below), whose sum is σ = 1095874560. Its totient is φ = 339897600.

The previous prime is 661034233. The next prime is 661034243. The reversal of 661034235 is 532430166.

It is not a de Polignac number, because 661034235 - 2¹ = 661034233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (661034233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128136 + ... + 133194.

It is an arithmetic number, because the mean of its divisors is an integer number (34246080).

Almost surely, 2^661034235 is an apocalyptic number.

661034235 is a deficient number, since it is larger than the sum of its proper divisors (434840325).

661034235 is a wasteful number, since it uses less digits than its factorization.

661034235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5379.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 661034235 is about 25710.5860493300. The cubic root of 661034235 is about 871.1133124664.

It can be divided in two parts, 66 and 1034235, that added together give a palindrome (1034301).

The spelling of 661034235 in words is "six hundred sixty-one million, thirty-four thousand, two hundred thirty-five".