61867123 has 2 divisors, whose sum is σ = 61867124. Its totient is φ = 61867122.

The previous prime is 61867109. The next prime is 61867129. The reversal of 61867123 is 32176816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61867123 - 2²¹ = 59769971 is a prime.

It is not a weakly prime, because it can be changed into another prime (61867129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30933561 + 30933562.

It is an arithmetic number, because the mean of its divisors is an integer number (30933562).

Almost surely, 2^61867123 is an apocalyptic number.

61867123 is a deficient number, since it is larger than the sum of its proper divisors (1).

61867123 is an equidigital number, since it uses as much as digits as its factorization.

61867123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 61867123 is about 7865.5656503522. The cubic root of 61867123 is about 395.5062099360.

The spelling of 61867123 in words is "sixty-one million, eight hundred sixty-seven thousand, one hundred twenty-three".