1002770664 has 128 divisors (see below), whose sum is σ = 2957475840. Its totient is φ = 277385472.

The previous prime is 1002770641. The next prime is 1002770669. The reversal of 1002770664 is 4660772001.

It is not an unprimeable number, because it can be changed into a prime (1002770669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 916902 + ... + 917994.

It is an arithmetic number, because the mean of its divisors is an integer number (23105280).

Almost surely, 2^1002770664 is an apocalyptic number.

1002770664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002770664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478737920).

1002770664 is an abundant number, since it is smaller than the sum of its proper divisors (1954705176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002770664 is a wasteful number, since it uses less digits than its factorization.

1002770664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 1002770664 is about 31666.5543436604. The cubic root of 1002770664 is about 1000.9227030239.

The spelling of 1002770664 in words is "one billion, two million, seven hundred seventy thousand, six hundred sixty-four".