661613010 has 16 divisors (see below), whose sum is σ = 1587871296. Its totient is φ = 176430128.

The previous prime is 661612999. The next prime is 661613033. The reversal of 661613010 is 10316166.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11026854 + ... + 11026913.

It is an arithmetic number, because the mean of its divisors is an integer number (99241956).

Almost surely, 2^661613010 is an apocalyptic number.

661613010 is an abundant number, since it is smaller than the sum of its proper divisors (926258286).

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

661613010 is a wasteful number, since it uses less digits than its factorization.

661613010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22053777.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 661613010 is about 25721.8391644144. The cubic root of 661613010 is about 871.3674755672.

Adding to 661613010 its reverse (10316166), we get a palindrome (671929176).

The spelling of 661613010 in words is "six hundred sixty-one million, six hundred thirteen thousand, ten".