661234924 has 24 divisors (see below), whose sum is σ = 1400263200. Its totient is φ = 266716416.

The previous prime is 661234913. The next prime is 661234927. The reversal of 661234924 is 429432166.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (661234927) 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, 694099 + ... + 695050.

It is an arithmetic number, because the mean of its divisors is an integer number (58344300).

Almost surely, 2^661234924 is an apocalyptic number.

It is an amenable number.

661234924 is an abundant number, since it is smaller than the sum of its proper divisors (739028276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

661234924 is a wasteful number, since it uses less digits than its factorization.

661234924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389177 (or 1389175 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 661234924 is about 25714.4886007869. The cubic root of 661234924 is about 871.2014597772.

The spelling of 661234924 in words is "six hundred sixty-one million, two hundred thirty-four thousand, nine hundred twenty-four".