61603650 has 36 divisors (see below), whose sum is σ = 165509682. Its totient is φ = 16427520.

The previous prime is 61603601. The next prime is 61603657. The reversal of 61603650 is 5630616.

61603650 is a `hidden beast` number, since 6 + 1 + 6 + 0 + 3 + 650 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 38303721 + 23299929 = 6189^2 + 4827^2 .

It is not an unprimeable number, because it can be changed into a prime (61603657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67999 + ... + 68898.

Almost surely, 2^61603650 is an apocalyptic number.

61603650 is an abundant number, since it is smaller than the sum of its proper divisors (103906032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61603650 is a wasteful number, since it uses less digits than its factorization.

61603650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136915 (or 136907 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 61603650 is about 7848.7992712261. The cubic root of 61603650 is about 394.9439647051.

The spelling of 61603650 in words is "sixty-one million, six hundred three thousand, six hundred fifty".