145349866 has 16 divisors (see below), whose sum is σ = 220521600. Its totient is φ = 71846208.

The previous prime is 145349819. The next prime is 145349887. The reversal of 145349866 is 668943541.

It is a super-2 number, since 2×145349866² = 42253167092435912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139375 + ... + 140413.

It is an arithmetic number, because the mean of its divisors is an integer number (13782600).

Almost surely, 2^145349866 is an apocalyptic number.

145349866 is a deficient number, since it is larger than the sum of its proper divisors (75171734).

145349866 is a wasteful number, since it uses less digits than its factorization.

145349866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773.

The product of its digits is 622080, while the sum is 46.

The square root of 145349866 is about 12056.1132211007. The cubic root of 145349866 is about 525.7809884969.

The spelling of 145349866 in words is "one hundred forty-five million, three hundred forty-nine thousand, eight hundred sixty-six".