145415664 has 60 divisors (see below), whose sum is σ = 428389000. Its totient is φ = 45919872.

The previous prime is 145415663. The next prime is 145415681. The reversal of 145415664 is 466514541.

145415664 is a `hidden beast` number, since 1 + 4 + 541 + 56 + 64 = 666.

It is a super-2 number, since 2×145415664² = 42291430673121792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145415663) 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, 23839 + ... + 29310.

Almost surely, 2^145415664 is an apocalyptic number.

It is an amenable number.

145415664 is an abundant number, since it is smaller than the sum of its proper divisors (282973336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145415664 is a wasteful number, since it uses less digits than its factorization.

145415664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53182 (or 53173 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 145415664 is about 12058.8417354238. The cubic root of 145415664 is about 525.8603146072.

The spelling of 145415664 in words is "one hundred forty-five million, four hundred fifteen thousand, six hundred sixty-four".