624648945 has 16 divisors (see below), whose sum is σ = 999919872. Its totient is φ = 332985600.

The previous prime is 624648929. The next prime is 624649021. The reversal of 624648945 is 549846426.

It is not a de Polignac number, because 624648945 - 2⁴ = 624648929 is a prime.

It is a super-2 number, since 2×624648945² = 780372608979226050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 624648894 and 624648903.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26409 + ... + 44121.

It is an arithmetic number, because the mean of its divisors is an integer number (62494992).

Almost surely, 2^624648945 is an apocalyptic number.

It is an amenable number.

624648945 is a deficient number, since it is larger than the sum of its proper divisors (375270927).

624648945 is a wasteful number, since it uses less digits than its factorization.

624648945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20072.

The product of its digits is 1658880, while the sum is 48.

The square root of 624648945 is about 24992.9779138061. The cubic root of 624648945 is about 854.8278645293.

The spelling of 624648945 in words is "six hundred twenty-four million, six hundred forty-eight thousand, nine hundred forty-five".