61536479 has 2 divisors, whose sum is σ = 61536480. Its totient is φ = 61536478.

The previous prime is 61536451. The next prime is 61536493. The reversal of 61536479 is 97463516.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61536479 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61532479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30768239 + 30768240.

It is an arithmetic number, because the mean of its divisors is an integer number (30768240).

Almost surely, 2^61536479 is an apocalyptic number.

61536479 is a deficient number, since it is larger than the sum of its proper divisors (1).

61536479 is an equidigital number, since it uses as much as digits as its factorization.

61536479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 61536479 is about 7844.5190419808. The cubic root of 61536479 is about 394.8003669962.

The spelling of 61536479 in words is "sixty-one million, five hundred thirty-six thousand, four hundred seventy-nine".