61016650 has 12 divisors (see below), whose sum is σ = 113491062. Its totient is φ = 24406640.

The previous prime is 61016647. The next prime is 61016707. The reversal of 61016650 is 5661016.

It can be written as a sum of positive squares in 3 ways, for example, as 58323769 + 2692881 = 7637^2 + 1641^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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 in 5 ways as a sum of consecutive naturals, for example, 610117 + ... + 610216.

Almost surely, 2^61016650 is an apocalyptic number.

61016650 is a deficient number, since it is larger than the sum of its proper divisors (52474412).

61016650 is a wasteful number, since it uses less digits than its factorization.

61016650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220345 (or 1220340 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 61016650 is about 7811.3155102070. The cubic root of 61016650 is about 393.6855307232.

Adding to 61016650 its reverse (5661016), we get a palindrome (66677666).

The spelling of 61016650 in words is "sixty-one million, sixteen thousand, six hundred fifty".