145063649 has 2 divisors, whose sum is σ = 145063650. Its totient is φ = 145063648.

The previous prime is 145063627. The next prime is 145063741. The reversal of 145063649 is 946360541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80550625 + 64513024 = 8975^2 + 8032^2 .

It is a cyclic number.

It is not a de Polignac number, because 145063649 - 2¹² = 145059553 is a prime.

It is a super-2 number, since 2×145063649² = 42086924522390402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145063609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72531824 + 72531825.

It is an arithmetic number, because the mean of its divisors is an integer number (72531825).

Almost surely, 2^145063649 is an apocalyptic number.

It is an amenable number.

145063649 is a deficient number, since it is larger than the sum of its proper divisors (1).

145063649 is an equidigital number, since it uses as much as digits as its factorization.

145063649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 145063649 is about 12044.2371697007. The cubic root of 145063649 is about 525.4356462606.

The spelling of 145063649 in words is "one hundred forty-five million, sixty-three thousand, six hundred forty-nine".