1020669 has 8 divisors (see below), whose sum is σ = 1465632. Its totient is φ = 628080.

The previous prime is 1020667. The next prime is 1020683. The reversal of 1020669 is 9660201.

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

It is not a de Polignac number, because 1020669 - 2¹ = 1020667 is a prime.

It is a super-2 number, since 2×1020669² = 2083530415122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13047 + ... + 13124.

It is an arithmetic number, because the mean of its divisors is an integer number (183204).

2^1020669 is an apocalyptic number.

It is an amenable number.

1020669 is a deficient number, since it is larger than the sum of its proper divisors (444963).

1020669 is a wasteful number, since it uses less digits than its factorization.

1020669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26187.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1020669 is about 1010.2816438994. The cubic root of 1020669 is about 100.6842736820.

The spelling of 1020669 in words is "one million, twenty thousand, six hundred sixty-nine".