61974973 has 2 divisors, whose sum is σ = 61974974. Its totient is φ = 61974972.

The previous prime is 61974961. The next prime is 61975003. The reversal of 61974973 is 37947916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40934404 + 21040569 = 6398^2 + 4587^2 .

It is a cyclic number.

It is not a de Polignac number, because 61974973 - 2⁹ = 61974461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61974953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30987486 + 30987487.

It is an arithmetic number, because the mean of its divisors is an integer number (30987487).

Almost surely, 2^61974973 is an apocalyptic number.

It is an amenable number.

61974973 is a deficient number, since it is larger than the sum of its proper divisors (1).

61974973 is an equidigital number, since it uses as much as digits as its factorization.

61974973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 61974973 is about 7872.4184975140. The cubic root of 61974973 is about 395.7358988796.

The spelling of 61974973 in words is "sixty-one million, nine hundred seventy-four thousand, nine hundred seventy-three".