61802947 has 2 divisors, whose sum is σ = 61802948. Its totient is φ = 61802946.

The previous prime is 61802903. The next prime is 61802957. The reversal of 61802947 is 74920816.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61802947 is a prime.

It is not a weakly prime, because it can be changed into another prime (61802957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30901473 + 30901474.

It is an arithmetic number, because the mean of its divisors is an integer number (30901474).

Almost surely, 2^61802947 is an apocalyptic number.

61802947 is a deficient number, since it is larger than the sum of its proper divisors (1).

61802947 is an equidigital number, since it uses as much as digits as its factorization.

61802947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 61802947 is about 7861.4850378284. The cubic root of 61802947 is about 395.3694071304.

The spelling of 61802947 in words is "sixty-one million, eight hundred two thousand, nine hundred forty-seven".