1026691064 has 64 divisors (see below), whose sum is σ = 2334355200. Its totient is φ = 413259264.

The previous prime is 1026691051. The next prime is 1026691067. The reversal of 1026691064 is 4601966201.

It is a super-4 number, since 4×1026691064⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026691067) 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 in 15 ways as a sum of consecutive naturals, for example, 649427 + ... + 651005.

It is an arithmetic number, because the mean of its divisors is an integer number (36474300).

Almost surely, 2^1026691064 is an apocalyptic number.

1026691064 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 1026691064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167177600).

1026691064 is an abundant number, since it is smaller than the sum of its proper divisors (1307664136).

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

1026691064 is a wasteful number, since it uses less digits than its factorization.

1026691064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292 (or 2288 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 1026691064 is about 32042.0202858684. The cubic root of 1026691064 is about 1008.8190176282.

The spelling of 1026691064 in words is "one billion, twenty-six million, six hundred ninety-one thousand, sixty-four".