145122664 has 8 divisors (see below), whose sum is σ = 272105010. Its totient is φ = 72561328.

The previous prime is 145122643. The next prime is 145122667. The reversal of 145122664 is 466221541.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 111133764 + 33988900 = 10542^2 + 5830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (145122667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9070159 + ... + 9070174.

Almost surely, 2^145122664 is an apocalyptic number.

It is an amenable number.

145122664 is a deficient number, since it is larger than the sum of its proper divisors (126982346).

145122664 is a wasteful number, since it uses less digits than its factorization.

145122664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18140339 (or 18140335 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 145122664 is about 12046.6868474282. The cubic root of 145122664 is about 525.5068894260.

The spelling of 145122664 in words is "one hundred forty-five million, one hundred twenty-two thousand, six hundred sixty-four".