146651987 has 2 divisors, whose sum is σ = 146651988. Its totient is φ = 146651986.

The previous prime is 146651983. The next prime is 146652029. The reversal of 146651987 is 789156641.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 146651987 - 2² = 146651983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146651983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73325993 + 73325994.

It is an arithmetic number, because the mean of its divisors is an integer number (73325994).

Almost surely, 2^146651987 is an apocalyptic number.

146651987 is a deficient number, since it is larger than the sum of its proper divisors (1).

146651987 is an equidigital number, since it uses as much as digits as its factorization.

146651987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 146651987 is about 12109.9953344335. The cubic root of 146651987 is about 527.3463979297.

The spelling of 146651987 in words is "one hundred forty-six million, six hundred fifty-one thousand, nine hundred eighty-seven".