61624873 has 2 divisors, whose sum is σ = 61624874. Its totient is φ = 61624872.

The previous prime is 61624861. The next prime is 61624877. The reversal of 61624873 is 37842616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61027344 + 597529 = 7812^2 + 773^2 .

It is a cyclic number.

It is not a de Polignac number, because 61624873 - 2⁵ = 61624841 is a prime.

It is a super-2 number, since 2×61624873² = 7595249944532258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61624877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30812436 + 30812437.

It is an arithmetic number, because the mean of its divisors is an integer number (30812437).

Almost surely, 2^61624873 is an apocalyptic number.

It is an amenable number.

61624873 is a deficient number, since it is larger than the sum of its proper divisors (1).

61624873 is an equidigital number, since it uses as much as digits as its factorization.

61624873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 61624873 is about 7850.1511450417. The cubic root of 61624873 is about 394.9893133892.

The spelling of 61624873 in words is "sixty-one million, six hundred twenty-four thousand, eight hundred seventy-three".