62991889 has 2 divisors, whose sum is σ = 62991890. Its totient is φ = 62991888.

The previous prime is 62991883. The next prime is 62991911. The reversal of 62991889 is 98819926.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55056400 + 7935489 = 7420^2 + 2817^2 .

It is a cyclic number.

It is not a de Polignac number, because 62991889 - 2²¹ = 60894737 is a prime.

It is not a weakly prime, because it can be changed into another prime (62991883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31495944 + 31495945.

It is an arithmetic number, because the mean of its divisors is an integer number (31495945).

Almost surely, 2^62991889 is an apocalyptic number.

It is an amenable number.

62991889 is a deficient number, since it is larger than the sum of its proper divisors (1).

62991889 is an equidigital number, since it uses as much as digits as its factorization.

62991889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 52.

The square root of 62991889 is about 7936.7429717737. The cubic root of 62991889 is about 397.8886437959. Note that the first 3 decimals are identical.

The spelling of 62991889 in words is "sixty-two million, nine hundred ninety-one thousand, eight hundred eighty-nine".