1000626564 has 48 divisors (see below), whose sum is σ = 2808780800. Its totient is φ = 270845856.

The previous prime is 1000626559. The next prime is 1000626581. The reversal of 1000626564 is 4656260001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311884 + ... + 315075.

Almost surely, 2^1000626564 is an apocalyptic number.

1000626564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1000626564 is an abundant number, since it is smaller than the sum of its proper divisors (1808154236).

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

1000626564 is a wasteful number, since it uses less digits than its factorization.

1000626564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626992 (or 626990 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1000626564 is about 31632.6818970507. The cubic root of 1000626564 is about 1000.2088110616.

Adding to 1000626564 its reverse (4656260001), we get a palindrome (5656886565).

The spelling of 1000626564 in words is "one billion, six hundred twenty-six thousand, five hundred sixty-four".