61274567 has 2 divisors, whose sum is σ = 61274568. Its totient is φ = 61274566.

The previous prime is 61274557. The next prime is 61274617. The reversal of 61274567 is 76547216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61274567 - 2¹² = 61270471 is a prime.

It is a super-2 number, since 2×61274567² = 7509145122074978, which contains 22 as substring.

It is a Chen prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61274567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61274537) 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, 30637283 + 30637284.

It is an arithmetic number, because the mean of its divisors is an integer number (30637284).

Almost surely, 2^61274567 is an apocalyptic number.

61274567 is a deficient number, since it is larger than the sum of its proper divisors (1).

61274567 is an equidigital number, since it uses as much as digits as its factorization.

61274567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 38.

The square root of 61274567 is about 7827.8072919560. The cubic root of 61274567 is about 394.2394530758.

The spelling of 61274567 in words is "sixty-one million, two hundred seventy-four thousand, five hundred sixty-seven".