146616639 has 16 divisors (see below), whose sum is σ = 217319424. Its totient is φ = 87314400.

The previous prime is 146616629. The next prime is 146616647. The reversal of 146616639 is 936616641.

It is not a de Polignac number, because 146616639 - 2⁴ = 146616623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146616639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146616629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59427 + ... + 61844.

It is an arithmetic number, because the mean of its divisors is an integer number (13582464).

Almost surely, 2^146616639 is an apocalyptic number.

146616639 is a deficient number, since it is larger than the sum of its proper divisors (70702785).

146616639 is a wasteful number, since it uses less digits than its factorization.

146616639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121318.

The product of its digits is 139968, while the sum is 42.

The square root of 146616639 is about 12108.5357909204. The cubic root of 146616639 is about 527.3040251924.

The spelling of 146616639 in words is "one hundred forty-six million, six hundred sixteen thousand, six hundred thirty-nine".