145563690 has 64 divisors (see below), whose sum is σ = 376047360. Its totient is φ = 35927040.

The previous prime is 145563689. The next prime is 145563739. The reversal of 145563690 is 96365541.

It is a super-2 number, since 2×145563690² = 42377575692832200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28771 + ... + 33449.

It is an arithmetic number, because the mean of its divisors is an integer number (5875740).

Almost surely, 2^145563690 is an apocalyptic number.

145563690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145563690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188023680).

145563690 is an abundant number, since it is smaller than the sum of its proper divisors (230483670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145563690 is a wasteful number, since it uses less digits than its factorization.

145563690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4767.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 145563690 is about 12064.9778284090. The cubic root of 145563690 is about 526.0386874155.

The spelling of 145563690 in words is "one hundred forty-five million, five hundred sixty-three thousand, six hundred ninety".