61770953 has 2 divisors, whose sum is σ = 61770954. Its totient is φ = 61770952.

The previous prime is 61770913. The next prime is 61770959. The reversal of 61770953 is 35907716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51955264 + 9815689 = 7208^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 61770953 - 2²⁰ = 60722377 is a prime.

It is not a weakly prime, because it can be changed into another prime (61770959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30885476 + 30885477.

It is an arithmetic number, because the mean of its divisors is an integer number (30885477).

Almost surely, 2^61770953 is an apocalyptic number.

It is an amenable number.

61770953 is a deficient number, since it is larger than the sum of its proper divisors (1).

61770953 is an equidigital number, since it uses as much as digits as its factorization.

61770953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 61770953 is about 7859.4499171380. The cubic root of 61770953 is about 395.3011707283.

The spelling of 61770953 in words is "sixty-one million, seven hundred seventy thousand, nine hundred fifty-three".