61874413 has 2 divisors, whose sum is σ = 61874414. Its totient is φ = 61874412.

The previous prime is 61874411. The next prime is 61874447. The reversal of 61874413 is 31447816.

It is a happy number.

It is an a-pointer prime, because the next prime (61874447) can be obtained adding 61874413 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52027369 + 9847044 = 7213^2 + 3138^2 .

It is a cyclic number.

It is not a de Polignac number, because 61874413 - 2¹ = 61874411 is a prime.

Together with 61874411, 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 (61874411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30937206 + 30937207.

It is an arithmetic number, because the mean of its divisors is an integer number (30937207).

Almost surely, 2^61874413 is an apocalyptic number.

It is an amenable number.

61874413 is a deficient number, since it is larger than the sum of its proper divisors (1).

61874413 is an equidigital number, since it uses as much as digits as its factorization.

61874413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 61874413 is about 7866.0290490183. The cubic root of 61874413 is about 395.5217439111.

The spelling of 61874413 in words is "sixty-one million, eight hundred seventy-four thousand, four hundred thirteen".