660156434 has 8 divisors (see below), whose sum is σ = 1131696768. Its totient is φ = 282924180.

The previous prime is 660156403. The next prime is 660156443. The reversal of 660156434 is 434651066.

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

It is a junction number, because it is equal to n+sod(n) for n = 660156394 and 660156403.

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, 23577002 + ... + 23577029.

It is an arithmetic number, because the mean of its divisors is an integer number (141462096).

Almost surely, 2^660156434 is an apocalyptic number.

660156434 is a deficient number, since it is larger than the sum of its proper divisors (471540334).

660156434 is a wasteful number, since it uses less digits than its factorization.

660156434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47154040.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 660156434 is about 25693.5095695392. The cubic root of 660156434 is about 870.7275518823.

The spelling of 660156434 in words is "six hundred sixty million, one hundred fifty-six thousand, four hundred thirty-four".