61630208 has 18 divisors (see below), whose sum is σ = 123020184. Its totient is φ = 30814976.

The previous prime is 61630199. The next prime is 61630241. The reversal of 61630208 is 80203616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120116 + ... + 120627.

Almost surely, 2^61630208 is an apocalyptic number.

It is an amenable number.

61630208 is a deficient number, since it is larger than the sum of its proper divisors (61389976).

61630208 is an equidigital number, since it uses as much as digits as its factorization.

61630208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240759 (or 240745 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 61630208 is about 7850.4909400623. The cubic root of 61630208 is about 395.0007114232. Note that the first 3 decimals are identical.

The spelling of 61630208 in words is "sixty-one million, six hundred thirty thousand, two hundred eight".