146556631 has 12 divisors (see below), whose sum is σ = 159125088. Its totient is φ = 134918784.

The previous prime is 146556611. The next prime is 146556637. The reversal of 146556631 is 136655641.

It is not a de Polignac number, because 146556631 - 2²⁵ = 113002199 is a prime.

It is a super-2 number, since 2×146556631² = 42957692180140322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146556637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77311 + ... + 79183.

It is an arithmetic number, because the mean of its divisors is an integer number (13260424).

Almost surely, 2^146556631 is an apocalyptic number.

146556631 is a deficient number, since it is larger than the sum of its proper divisors (12568457).

146556631 is a wasteful number, since it uses less digits than its factorization.

146556631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2349 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 146556631 is about 12106.0576159210. The cubic root of 146556631 is about 527.2320761556.

The spelling of 146556631 in words is "one hundred forty-six million, five hundred fifty-six thousand, six hundred thirty-one".