61656347 has 2 divisors, whose sum is σ = 61656348. Its totient is φ = 61656346.

The previous prime is 61656337. The next prime is 61656373. The reversal of 61656347 is 74365616.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61656347 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 61656347.

It is not a weakly prime, because it can be changed into another prime (61656337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30828173 + 30828174.

It is an arithmetic number, because the mean of its divisors is an integer number (30828174).

Almost surely, 2^61656347 is an apocalyptic number.

61656347 is a deficient number, since it is larger than the sum of its proper divisors (1).

61656347 is an equidigital number, since it uses as much as digits as its factorization.

61656347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 61656347 is about 7852.1555639200. The cubic root of 61656347 is about 395.0565469438.

The spelling of 61656347 in words is "sixty-one million, six hundred fifty-six thousand, three hundred forty-seven".