624001145 has 4 divisors (see below), whose sum is σ = 748801380. Its totient is φ = 499200912.

The previous prime is 624001141. The next prime is 624001159. The reversal of 624001145 is 541100426.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 491198569 + 132802576 = 22163^2 + 11524^2 .

It is a cyclic number.

It is not a de Polignac number, because 624001145 - 2² = 624001141 is a prime.

It is a super-2 number, since 2×624001145² = 778754857922622050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 624001145.

It is not an unprimeable number, because it can be changed into a prime (624001141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62400110 + ... + 62400119.

It is an arithmetic number, because the mean of its divisors is an integer number (187200345).

Almost surely, 2^624001145 is an apocalyptic number.

It is an amenable number.

624001145 is a deficient number, since it is larger than the sum of its proper divisors (124800235).

624001145 is a wasteful number, since it uses less digits than its factorization.

624001145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124800234.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 624001145 is about 24980.0149119251. The cubic root of 624001145 is about 854.5322590096.

The spelling of 624001145 in words is "six hundred twenty-four million, one thousand, one hundred forty-five".