146631623 has 4 divisors (see below), whose sum is σ = 148002120. Its totient is φ = 145261128.

The previous prime is 146631619. The next prime is 146631673. The reversal of 146631623 is 326136641.

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

It is a cyclic number.

It is not a de Polignac number, because 146631623 - 2² = 146631619 is a prime.

It is a super-2 number, since 2×146631623² = 43001665727228258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146631623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146631673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685088 + ... + 685301.

It is an arithmetic number, because the mean of its divisors is an integer number (37000530).

Almost surely, 2^146631623 is an apocalyptic number.

146631623 is a deficient number, since it is larger than the sum of its proper divisors (1370497).

146631623 is a wasteful number, since it uses less digits than its factorization.

146631623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370496.

The product of its digits is 15552, while the sum is 32.

The square root of 146631623 is about 12109.1545121862. The cubic root of 146631623 is about 527.3219878066.

The spelling of 146631623 in words is "one hundred forty-six million, six hundred thirty-one thousand, six hundred twenty-three".