145646066 has 4 divisors (see below), whose sum is σ = 218469102. Its totient is φ = 72823032.

The previous prime is 145646047. The next prime is 145646093. The reversal of 145646066 is 660646541.

145646066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 100420441 + 45225625 = 10021^2 + 6725^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36411515 + ... + 36411518.

Almost surely, 2^145646066 is an apocalyptic number.

145646066 is a deficient number, since it is larger than the sum of its proper divisors (72823036).

145646066 is an equidigital number, since it uses as much as digits as its factorization.

145646066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72823035.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 145646066 is about 12068.3911935270. The cubic root of 145646066 is about 526.1378989503.

The spelling of 145646066 in words is "one hundred forty-five million, six hundred forty-six thousand, sixty-six".