61842973 has 2 divisors, whose sum is σ = 61842974. Its totient is φ = 61842972.

The previous prime is 61842971. The next prime is 61842983. The reversal of 61842973 is 37924816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60637369 + 1205604 = 7787^2 + 1098^2 .

It is a cyclic number.

It is not a de Polignac number, because 61842973 - 2¹ = 61842971 is a prime.

Together with 61842971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61842971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30921486 + 30921487.

It is an arithmetic number, because the mean of its divisors is an integer number (30921487).

Almost surely, 2^61842973 is an apocalyptic number.

It is an amenable number.

61842973 is a deficient number, since it is larger than the sum of its proper divisors (1).

61842973 is an equidigital number, since it uses as much as digits as its factorization.

61842973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 61842973 is about 7864.0303280188. The cubic root of 61842973 is about 395.4547409296.

The spelling of 61842973 in words is "sixty-one million, eight hundred forty-two thousand, nine hundred seventy-three".