145624637 has 6 divisors (see below), whose sum is σ = 149668218. Its totient is φ = 141687504.

The previous prime is 145624553. The next prime is 145624663. The reversal of 145624637 is 736426541.

It is a happy number.

145624637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 31967716 + 113656921 = 5654^2 + 10661^2 .

It is not a de Polignac number, because 145624637 - 2¹⁰ = 145623613 is a prime.

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 145624637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145624537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51818 + ... + 54555.

It is an arithmetic number, because the mean of its divisors is an integer number (24944703).

Almost surely, 2^145624637 is an apocalyptic number.

It is an amenable number.

145624637 is a deficient number, since it is larger than the sum of its proper divisors (4043581).

145624637 is an equidigital number, since it uses as much as digits as its factorization.

145624637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106447 (or 106410 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 145624637 is about 12067.5033457630. The cubic root of 145624637 is about 526.1120940148.

The spelling of 145624637 in words is "one hundred forty-five million, six hundred twenty-four thousand, six hundred thirty-seven".