660038 has 4 divisors (see below), whose sum is σ = 990060. Its totient is φ = 330018.

The previous prime is 660029. The next prime is 660047. The reversal of 660038 is 830066.

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

It is an interprime number because it is at equal distance from previous prime (660029) and next prime (660047).

It is a super-2 number, since 2×660038² = 871300322888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 659995 and 660022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165008 + ... + 165011.

It is an arithmetic number, because the mean of its divisors is an integer number (247515).

2⁶⁶⁰⁰³⁸ is an apocalyptic number.

660038 is a deficient number, since it is larger than the sum of its proper divisors (330022).

660038 is a wasteful number, since it uses less digits than its factorization.

660038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330021.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 660038 is about 812.4272275103. The cubic root of 660038 is about 87.0675478409.

The spelling of 660038 in words is "six hundred sixty thousand, thirty-eight".