156649406 has 8 divisors (see below), whose sum is σ = 235191600. Its totient is φ = 78252208.

The previous prime is 156649393. The next prime is 156649421. The reversal of 156649406 is 604946651.

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

It is a Curzon number.

It is a congruent number.

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, 33506 + ... + 37893.

It is an arithmetic number, because the mean of its divisors is an integer number (29398950).

Almost surely, 2^156649406 is an apocalyptic number.

156649406 is a deficient number, since it is larger than the sum of its proper divisors (78542194).

156649406 is a wasteful number, since it uses less digits than its factorization.

156649406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72498.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 156649406 is about 12515.9660434183. The cubic root of 156649406 is about 539.0672122324.

The spelling of 156649406 in words is "one hundred fifty-six million, six hundred forty-nine thousand, four hundred six".