145632646 has 8 divisors (see below), whose sum is σ = 218539440. Its totient is φ = 72786168.

The previous prime is 145632623. The next prime is 145632661. The reversal of 145632646 is 646236541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145632646² = 42417735161922632, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8461 + ... + 19048.

It is an arithmetic number, because the mean of its divisors is an integer number (27317430).

Almost surely, 2^145632646 is an apocalyptic number.

145632646 is a deficient number, since it is larger than the sum of its proper divisors (72906794).

145632646 is a wasteful number, since it uses less digits than its factorization.

145632646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30158.

The product of its digits is 103680, while the sum is 37.

The square root of 145632646 is about 12067.8351828321. The cubic root of 145632646 is about 526.1217387988.

The spelling of 145632646 in words is "one hundred forty-five million, six hundred thirty-two thousand, six hundred forty-six".