1357730666 has 8 divisors (see below), whose sum is σ = 2038134720. Its totient is φ = 678352428.

The previous prime is 1357730639. The next prime is 1357730677. The reversal of 1357730666 is 6660377531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1357730666² = 3686865122793607112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253136 + ... + 258443.

It is an arithmetic number, because the mean of its divisors is an integer number (254766840).

Almost surely, 2^1357730666 is an apocalyptic number.

1357730666 is a deficient number, since it is larger than the sum of its proper divisors (680404054).

1357730666 is a wasteful number, since it uses less digits than its factorization.

1357730666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512908.

The product of its (nonzero) digits is 476280, while the sum is 44.

The square root of 1357730666 is about 36847.3970044018. The cubic root of 1357730666 is about 1107.3150663699.

The spelling of 1357730666 in words is "one billion, three hundred fifty-seven million, seven hundred thirty thousand, six hundred sixty-six".