61104739 has 2 divisors, whose sum is σ = 61104740. Its totient is φ = 61104738.

The previous prime is 61104733. The next prime is 61104773. The reversal of 61104739 is 93740116.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61104739 - 2³ = 61104731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61104739.

It is not a weakly prime, because it can be changed into another prime (61104731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30552369 + 30552370.

It is an arithmetic number, because the mean of its divisors is an integer number (30552370).

Almost surely, 2^61104739 is an apocalyptic number.

61104739 is a deficient number, since it is larger than the sum of its proper divisors (1).

61104739 is an equidigital number, since it uses as much as digits as its factorization.

61104739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 61104739 is about 7816.9520274849. The cubic root of 61104739 is about 393.8748926397.

The spelling of 61104739 in words is "sixty-one million, one hundred four thousand, seven hundred thirty-nine".