661114830 has 32 divisors (see below), whose sum is σ = 1587890304. Its totient is φ = 176162336.

The previous prime is 661114799. The next prime is 661114843. The reversal of 661114830 is 38411166.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35089 + ... + 50531.

It is an arithmetic number, because the mean of its divisors is an integer number (49621572).

Almost surely, 2^661114830 is an apocalyptic number.

661114830 is an abundant number, since it is smaller than the sum of its proper divisors (926775474).

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

661114830 is a wasteful number, since it uses less digits than its factorization.

661114830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16880.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 661114830 is about 25712.1533520629. The cubic root of 661114830 is about 871.1487138221.

Adding to 661114830 its reverse (38411166), we get a palindrome (699525996).

The spelling of 661114830 in words is "six hundred sixty-one million, one hundred fourteen thousand, eight hundred thirty".