61660250 has 16 divisors (see below), whose sum is σ = 115428456. Its totient is φ = 24664000.

The previous prime is 61660243. The next prime is 61660279. The reversal of 61660250 is 5206616.

It can be written as a sum of positive squares in 4 ways, for example, as 38725729 + 22934521 = 6223^2 + 4789^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123071 + ... + 123570.

Almost surely, 2^61660250 is an apocalyptic number.

61660250 is a deficient number, since it is larger than the sum of its proper divisors (53768206).

61660250 is a wasteful number, since it uses less digits than its factorization.

61660250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246658 (or 246648 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 61660250 is about 7852.4040904681. The cubic root of 61660250 is about 395.0648827883.

Adding to 61660250 its reverse (5206616), we get a palindrome (66866866).

The spelling of 61660250 in words is "sixty-one million, six hundred sixty thousand, two hundred fifty".