165366746 has 4 divisors (see below), whose sum is σ = 248050122. Its totient is φ = 82683372.

The previous prime is 165366737. The next prime is 165366749. The reversal of 165366746 is 647663561.

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., 153388225 + 11978521 = 12385^2 + 3461^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 165366697 and 165366706.

It is not an unprimeable number, because it can be changed into a prime (165366749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41341685 + ... + 41341688.

Almost surely, 2^165366746 is an apocalyptic number.

165366746 is a deficient number, since it is larger than the sum of its proper divisors (82683376).

165366746 is an equidigital number, since it uses as much as digits as its factorization.

165366746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82683375.

The product of its digits is 544320, while the sum is 44.

The square root of 165366746 is about 12859.5002235701. The cubic root of 165366746 is about 548.8867244061.

The spelling of 165366746 in words is "one hundred sixty-five million, three hundred sixty-six thousand, seven hundred forty-six".