61868941 has 2 divisors, whose sum is σ = 61868942. Its totient is φ = 61868940.

The previous prime is 61868927. The next prime is 61868951. The reversal of 61868941 is 14986816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57229225 + 4639716 = 7565^2 + 2154^2 .

It is a cyclic number.

It is not a de Polignac number, because 61868941 - 2⁷ = 61868813 is a prime.

It is a super-2 number, since 2×61868941² = 7655531720922962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61868951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30934470 + 30934471.

It is an arithmetic number, because the mean of its divisors is an integer number (30934471).

Almost surely, 2^61868941 is an apocalyptic number.

It is an amenable number.

61868941 is a deficient number, since it is larger than the sum of its proper divisors (1).

61868941 is an equidigital number, since it uses as much as digits as its factorization.

61868941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 61868941 is about 7865.6812165254. The cubic root of 61868941 is about 395.5100839551.

The spelling of 61868941 in words is "sixty-one million, eight hundred sixty-eight thousand, nine hundred forty-one".