1249070660 has 24 divisors (see below), whose sum is σ = 2737094976. Its totient is φ = 477905120.

The previous prime is 1249070657. The next prime is 1249070677. The reversal of 1249070660 is 660709421.

It is a self number, because there is not a number n which added to its sum of digits gives 1249070660.

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, 1357226 + ... + 1358145.

It is an arithmetic number, because the mean of its divisors is an integer number (114045624).

Almost surely, 2^1249070660 is an apocalyptic number.

1249070660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249070660 is an abundant number, since it is smaller than the sum of its proper divisors (1488024316).

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

1249070660 is a wasteful number, since it uses less digits than its factorization.

1249070660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715403 (or 2715401 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1249070660 is about 35342.1937632626. The cubic root of 1249070660 is about 1076.9503185181.

The spelling of 1249070660 in words is "one billion, two hundred forty-nine million, seventy thousand, six hundred sixty".