145210646 has 16 divisors (see below), whose sum is σ = 249259680. Its totient is φ = 62151360.

The previous prime is 145210621. The next prime is 145210679. The reversal of 145210646 is 646012541.

It is a super-2 number, since 2×145210646² = 42172263423474632, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 4916 + ... + 17736.

It is an arithmetic number, because the mean of its divisors is an integer number (15578730).

Almost surely, 2^145210646 is an apocalyptic number.

145210646 is a deficient number, since it is larger than the sum of its proper divisors (104049034).

145210646 is a wasteful number, since it uses less digits than its factorization.

145210646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13639.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 145210646 is about 12050.3380035582. The cubic root of 145210646 is about 525.6130658277.

The spelling of 145210646 in words is "one hundred forty-five million, two hundred ten thousand, six hundred forty-six".