83774987 has 2 divisors, whose sum is σ = 83774988. Its totient is φ = 83774986.

The previous prime is 83774983. The next prime is 83775001. The reversal of 83774987 is 78947738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83774987 - 2² = 83774983 is a prime.

It is not a weakly prime, because it can be changed into another prime (83774981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41887493 + 41887494.

It is an arithmetic number, because the mean of its divisors is an integer number (41887494).

Almost surely, 2^83774987 is an apocalyptic number.

83774987 is a deficient number, since it is larger than the sum of its proper divisors (1).

83774987 is an equidigital number, since it uses as much as digits as its factorization.

83774987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2370816, while the sum is 53.

The square root of 83774987 is about 9152.8676926961. The cubic root of 83774987 is about 437.5605132079.

The spelling of 83774987 in words is "eighty-three million, seven hundred seventy-four thousand, nine hundred eighty-seven".