61662113 has 2 divisors, whose sum is σ = 61662114. Its totient is φ = 61662112.

The previous prime is 61662109. The next prime is 61662119. The reversal of 61662113 is 31126616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53465344 + 8196769 = 7312^2 + 2863^2 .

It is a cyclic number.

It is not a de Polignac number, because 61662113 - 2² = 61662109 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61662119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30831056 + 30831057.

It is an arithmetic number, because the mean of its divisors is an integer number (30831057).

Almost surely, 2^61662113 is an apocalyptic number.

It is an amenable number.

61662113 is a deficient number, since it is larger than the sum of its proper divisors (1).

61662113 is an equidigital number, since it uses as much as digits as its factorization.

61662113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 61662113 is about 7852.5227156628. The cubic root of 61662113 is about 395.0688615724.

Adding to 61662113 its reverse (31126616), we get a palindrome (92788729).

The spelling of 61662113 in words is "sixty-one million, six hundred sixty-two thousand, one hundred thirteen".