1061640004 has 24 divisors (see below), whose sum is σ = 2034993240. Its totient is φ = 482366976.

The previous prime is 1061639977. The next prime is 1061640023. The reversal of 1061640004 is 4000461601.

It can be written as a sum of positive squares in 4 ways, for example, as 454116100 + 607523904 = 21310^2 + 24648^2 .

It is a super-2 number, since 2×1061640004² = 2254158996186240032, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 267207 + ... + 271150.

It is an arithmetic number, because the mean of its divisors is an integer number (84791385).

Almost surely, 2^1061640004 is an apocalyptic number.

It is an amenable number.

1061640004 is a deficient number, since it is larger than the sum of its proper divisors (973353236).

1061640004 is a wasteful number, since it uses less digits than its factorization.

1061640004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538407 (or 538405 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1061640004 is about 32582.8176191072. The cubic root of 1061640004 is about 1020.1383908087.

The spelling of 1061640004 in words is "one billion, sixty-one million, six hundred forty thousand, four".