61973207 has 2 divisors, whose sum is σ = 61973208. Its totient is φ = 61973206.

The previous prime is 61973179. The next prime is 61973221. The reversal of 61973207 is 70237916.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61973207 - 2¹² = 61969111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61973227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30986603 + 30986604.

It is an arithmetic number, because the mean of its divisors is an integer number (30986604).

Almost surely, 2^61973207 is an apocalyptic number.

61973207 is a deficient number, since it is larger than the sum of its proper divisors (1).

61973207 is an equidigital number, since it uses as much as digits as its factorization.

61973207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 61973207 is about 7872.3063329624. The cubic root of 61973207 is about 395.7321399632.

The spelling of 61973207 in words is "sixty-one million, nine hundred seventy-three thousand, two hundred seven".