145323646 has 16 divisors (see below), whose sum is σ = 235600848. Its totient is φ = 66830400.

The previous prime is 145323641. The next prime is 145323653. The reversal of 145323646 is 646323541.

It is a super-2 number, since 2×145323646² = 42237924173466632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145323641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2640 + ... + 17251.

It is an arithmetic number, because the mean of its divisors is an integer number (14725053).

Almost surely, 2^145323646 is an apocalyptic number.

145323646 is a deficient number, since it is larger than the sum of its proper divisors (90277202).

145323646 is a wasteful number, since it uses less digits than its factorization.

145323646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20187.

The product of its digits is 51840, while the sum is 34.

The square root of 145323646 is about 12055.0257569198. The cubic root of 145323646 is about 525.7493709776.

The spelling of 145323646 in words is "one hundred forty-five million, three hundred twenty-three thousand, six hundred forty-six".