61887383 has 2 divisors, whose sum is σ = 61887384. Its totient is φ = 61887382.

The previous prime is 61887379. The next prime is 61887403. The reversal of 61887383 is 38378816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61887383 - 2² = 61887379 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61887083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30943691 + 30943692.

It is an arithmetic number, because the mean of its divisors is an integer number (30943692).

Almost surely, 2^61887383 is an apocalyptic number.

61887383 is a deficient number, since it is larger than the sum of its proper divisors (1).

61887383 is an equidigital number, since it uses as much as digits as its factorization.

61887383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 61887383 is about 7866.8534370484. The cubic root of 61887383 is about 395.5493781591.

The spelling of 61887383 in words is "sixty-one million, eight hundred eighty-seven thousand, three hundred eighty-three".