61463947 has 2 divisors, whose sum is σ = 61463948. Its totient is φ = 61463946.

The previous prime is 61463893. The next prime is 61463971. The reversal of 61463947 is 74936416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61463947 - 2⁷ = 61463819 is a prime.

It is not a weakly prime, because it can be changed into another prime (61463147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30731973 + 30731974.

It is an arithmetic number, because the mean of its divisors is an integer number (30731974).

Almost surely, 2^61463947 is an apocalyptic number.

61463947 is a deficient number, since it is larger than the sum of its proper divisors (1).

61463947 is an equidigital number, since it uses as much as digits as its factorization.

61463947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 61463947 is about 7839.8945783728. The cubic root of 61463947 is about 394.6451911891.

The spelling of 61463947 in words is "sixty-one million, four hundred sixty-three thousand, nine hundred forty-seven".