61904849 has 2 divisors, whose sum is σ = 61904850. Its totient is φ = 61904848.

The previous prime is 61904839. The next prime is 61904867. The reversal of 61904849 is 94840916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46444225 + 15460624 = 6815^2 + 3932^2 .

It is a cyclic number.

It is not a de Polignac number, because 61904849 - 2⁴ = 61904833 is a prime.

It is a super-3 number, since 3×61904849³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61904809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30952424 + 30952425.

It is an arithmetic number, because the mean of its divisors is an integer number (30952425).

Almost surely, 2^61904849 is an apocalyptic number.

It is an amenable number.

61904849 is a deficient number, since it is larger than the sum of its proper divisors (1).

61904849 is an equidigital number, since it uses as much as digits as its factorization.

61904849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 61904849 is about 7867.9634594983. The cubic root of 61904849 is about 395.5865856117.

The spelling of 61904849 in words is "sixty-one million, nine hundred four thousand, eight hundred forty-nine".