661146696 has 48 divisors (see below), whose sum is σ = 2046408000. Its totient is φ = 188898912.

The previous prime is 661146679. The next prime is 661146701. The reversal of 661146696 is 696641166.

It is a super-2 number, since 2×661146696² = 874229907263432832, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 655396 + ... + 656403.

It is an arithmetic number, because the mean of its divisors is an integer number (42633500).

Almost surely, 2^661146696 is an apocalyptic number.

It is an amenable number.

661146696 is an abundant number, since it is smaller than the sum of its proper divisors (1385261304).

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

661146696 is a wasteful number, since it uses less digits than its factorization.

661146696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311818 (or 1311811 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 661146696 is about 25712.7730126488. The cubic root of 661146696 is about 871.1627101697.

The spelling of 661146696 in words is "six hundred sixty-one million, one hundred forty-six thousand, six hundred ninety-six".