61706947 has 2 divisors, whose sum is σ = 61706948. Its totient is φ = 61706946.

The previous prime is 61706941. The next prime is 61706951. The reversal of 61706947 is 74960716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61706947 - 2⁷ = 61706819 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61706941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30853473 + 30853474.

It is an arithmetic number, because the mean of its divisors is an integer number (30853474).

Almost surely, 2^61706947 is an apocalyptic number.

61706947 is a deficient number, since it is larger than the sum of its proper divisors (1).

61706947 is an equidigital number, since it uses as much as digits as its factorization.

61706947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 61706947 is about 7855.3769483074. The cubic root of 61706947 is about 395.1645887828.

The spelling of 61706947 in words is "sixty-one million, seven hundred six thousand, nine hundred forty-seven".