156406066 has 4 divisors (see below), whose sum is σ = 234609102. Its totient is φ = 78203032.

The previous prime is 156406057. The next prime is 156406079. The reversal of 156406066 is 660604651.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 155725441 + 680625 = 12479^2 + 825^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39101515 + ... + 39101518.

Almost surely, 2^156406066 is an apocalyptic number.

156406066 is a deficient number, since it is larger than the sum of its proper divisors (78203036).

156406066 is an equidigital number, since it uses as much as digits as its factorization.

156406066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78203035.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 156406066 is about 12506.2410819558. The cubic root of 156406066 is about 538.7879376388.

The spelling of 156406066 in words is "one hundred fifty-six million, four hundred six thousand, sixty-six".