146688637 has 2 divisors, whose sum is σ = 146688638. Its totient is φ = 146688636.

The previous prime is 146688629. The next prime is 146688653. The reversal of 146688637 is 736886641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146264836 + 423801 = 12094^2 + 651^2 .

It is a cyclic number.

It is not a de Polignac number, because 146688637 - 2³ = 146688629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146688137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73344318 + 73344319.

It is an arithmetic number, because the mean of its divisors is an integer number (73344319).

Almost surely, 2^146688637 is an apocalyptic number.

It is an amenable number.

146688637 is a deficient number, since it is larger than the sum of its proper divisors (1).

146688637 is an equidigital number, since it uses as much as digits as its factorization.

146688637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The square root of 146688637 is about 12111.5084527073. The cubic root of 146688637 is about 527.3903242255.

The spelling of 146688637 in words is "one hundred forty-six million, six hundred eighty-eight thousand, six hundred thirty-seven".