61873943 has 2 divisors, whose sum is σ = 61873944. Its totient is φ = 61873942.

The previous prime is 61873921. The next prime is 61873991. The reversal of 61873943 is 34937816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61873943 - 2¹⁰ = 61872919 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61873943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61875943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30936971 + 30936972.

It is an arithmetic number, because the mean of its divisors is an integer number (30936972).

Almost surely, 2^61873943 is an apocalyptic number.

61873943 is a deficient number, since it is larger than the sum of its proper divisors (1).

61873943 is an equidigital number, since it uses as much as digits as its factorization.

61873943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 61873943 is about 7865.9991736587. Note that the first 3 decimals coincide. The cubic root of 61873943 is about 395.5207424433.

The spelling of 61873943 in words is "sixty-one million, eight hundred seventy-three thousand, nine hundred forty-three".