1020688670 has 32 divisors (see below), whose sum is σ = 1947561408. Its totient is φ = 383815168.

The previous prime is 1020688651. The next prime is 1020688673. The reversal of 1020688670 is 768860201.

It is a super-2 number, since 2×1020688670² = 2083610722132737800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020688673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169247 + ... + 175173.

It is an arithmetic number, because the mean of its divisors is an integer number (60861294).

Almost surely, 2^1020688670 is an apocalyptic number.

1020688670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020688670 is a deficient number, since it is larger than the sum of its proper divisors (926872738).

1020688670 is a wasteful number, since it uses less digits than its factorization.

1020688670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6964.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1020688670 is about 31948.2185731850. The cubic root of 1020688670 is about 1006.8492046269.

The spelling of 1020688670 in words is "one billion, twenty million, six hundred eighty-eight thousand, six hundred seventy".