61900849 has 2 divisors, whose sum is σ = 61900850. Its totient is φ = 61900848.

The previous prime is 61900829. The next prime is 61900871. The reversal of 61900849 is 94800916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59783824 + 2117025 = 7732^2 + 1455^2 .

It is a cyclic number.

It is not a de Polignac number, because 61900849 - 2¹⁷ = 61769777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61900829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30950424 + 30950425.

It is an arithmetic number, because the mean of its divisors is an integer number (30950425).

Almost surely, 2^61900849 is an apocalyptic number.

It is an amenable number.

61900849 is a deficient number, since it is larger than the sum of its proper divisors (1).

61900849 is an equidigital number, since it uses as much as digits as its factorization.

61900849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 61900849 is about 7867.7092600070. The cubic root of 61900849 is about 395.5780651137.

The spelling of 61900849 in words is "sixty-one million, nine hundred thousand, eight hundred forty-nine".