61233947 has 2 divisors, whose sum is σ = 61233948. Its totient is φ = 61233946.

The previous prime is 61233943. The next prime is 61233961. The reversal of 61233947 is 74933216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61233947 - 2² = 61233943 is a prime.

It is not a weakly prime, because it can be changed into another prime (61233943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30616973 + 30616974.

It is an arithmetic number, because the mean of its divisors is an integer number (30616974).

Almost surely, 2^61233947 is an apocalyptic number.

61233947 is a deficient number, since it is larger than the sum of its proper divisors (1).

61233947 is an equidigital number, since it uses as much as digits as its factorization.

61233947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 61233947 is about 7825.2122654916. The cubic root of 61233947 is about 394.1523177039.

The spelling of 61233947 in words is "sixty-one million, two hundred thirty-three thousand, nine hundred forty-seven".