61274963 has 2 divisors, whose sum is σ = 61274964. Its totient is φ = 61274962.

The previous prime is 61274903. The next prime is 61274971. The reversal of 61274963 is 36947216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61274963 - 2¹⁰ = 61273939 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (61274903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30637481 + 30637482.

It is an arithmetic number, because the mean of its divisors is an integer number (30637482).

Almost surely, 2^61274963 is an apocalyptic number.

61274963 is a deficient number, since it is larger than the sum of its proper divisors (1).

61274963 is an equidigital number, since it uses as much as digits as its factorization.

61274963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 61274963 is about 7827.8325863549. The cubic root of 61274963 is about 394.2403023596.

It can be divided in two parts, 6127 and 4963, that multiplied together give a triangular number (30408301 = T₇₇₉₈).

The spelling of 61274963 in words is "sixty-one million, two hundred seventy-four thousand, nine hundred sixty-three".