61478759 has 2 divisors, whose sum is σ = 61478760. Its totient is φ = 61478758.

The previous prime is 61478723. The next prime is 61478761. The reversal of 61478759 is 95787416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61478759 - 2¹⁶ = 61413223 is a prime.

It is a Sophie Germain prime.

Together with 61478761, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61478159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30739379 + 30739380.

It is an arithmetic number, because the mean of its divisors is an integer number (30739380).

Almost surely, 2^61478759 is an apocalyptic number.

61478759 is a deficient number, since it is larger than the sum of its proper divisors (1).

61478759 is an equidigital number, since it uses as much as digits as its factorization.

61478759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 47.

The square root of 61478759 is about 7840.8391770269. The cubic root of 61478759 is about 394.6768900704.

The spelling of 61478759 in words is "sixty-one million, four hundred seventy-eight thousand, seven hundred fifty-nine".