146739664 has 10 divisors (see below), whose sum is σ = 284308130. Its totient is φ = 73369824.

The previous prime is 146739661. The next prime is 146739713. The reversal of 146739664 is 466937641.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 81000000 + 65739664 = 9000^2 + 8108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146739661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4585599 + ... + 4585630.

It is an arithmetic number, because the mean of its divisors is an integer number (28430813).

Almost surely, 2^146739664 is an apocalyptic number.

It is an amenable number.

146739664 is a deficient number, since it is larger than the sum of its proper divisors (137568466).

146739664 is an equidigital number, since it uses as much as digits as its factorization.

146739664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9171237 (or 9171231 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The square root of 146739664 is about 12113.6148196977. The cubic root of 146739664 is about 527.4514696711.

The spelling of 146739664 in words is "one hundred forty-six million, seven hundred thirty-nine thousand, six hundred sixty-four".