145622664 has 128 divisors (see below), whose sum is σ = 445132800. Its totient is φ = 43744320.

The previous prime is 145622657. The next prime is 145622689. The reversal of 145622664 is 466226541.

145622664 is a `hidden beast` number, since 14 + 562 + 26 + 64 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396609 + ... + 396975.

It is an arithmetic number, because the mean of its divisors is an integer number (3477600).

Almost surely, 2^145622664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145622664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222566400).

145622664 is an abundant number, since it is smaller than the sum of its proper divisors (299510136).

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

145622664 is a wasteful number, since it uses less digits than its factorization.

145622664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 550 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 145622664 is about 12067.4215970107. The cubic root of 145622664 is about 526.1097179886.

The spelling of 145622664 in words is "one hundred forty-five million, six hundred twenty-two thousand, six hundred sixty-four".