146821699 has 2 divisors, whose sum is σ = 146821700. Its totient is φ = 146821698.

The previous prime is 146821687. The next prime is 146821729. The reversal of 146821699 is 996128641.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (996128641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146821699 - 2¹³ = 146813507 is a prime.

It is a super-2 number, since 2×146821699² = 43113222594493202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146821399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73410849 + 73410850.

It is an arithmetic number, because the mean of its divisors is an integer number (73410850).

Almost surely, 2^146821699 is an apocalyptic number.

146821699 is a deficient number, since it is larger than the sum of its proper divisors (1).

146821699 is an equidigital number, since it uses as much as digits as its factorization.

146821699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 146821699 is about 12117.0004126434. Note that the first 3 decimals coincide. The cubic root of 146821699 is about 527.5497421703.

The spelling of 146821699 in words is "one hundred forty-six million, eight hundred twenty-one thousand, six hundred ninety-nine".