1007999975 has 12 divisors (see below), whose sum is σ = 1250318784. Its totient is φ = 806142720.

The previous prime is 1007999969. The next prime is 1007999977. The reversal of 1007999975 is 5799997001.

It is not a de Polignac number, because 1007999975 - 2¹⁸ = 1007737831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1007999975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1007999977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131447 + ... + 138903.

It is an arithmetic number, because the mean of its divisors is an integer number (104193232).

Almost surely, 2^1007999975 is an apocalyptic number.

1007999975 is a deficient number, since it is larger than the sum of its proper divisors (242318809).

1007999975 is an equidigital number, since it uses as much as digits as its factorization.

1007999975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12874 (or 12869 counting only the distinct ones).

The product of its (nonzero) digits is 1607445, while the sum is 56.

The square root of 1007999975 is about 31749.0153390621. The cubic root of 1007999975 is about 1002.6595787037.

The spelling of 1007999975 in words is "one billion, seven million, nine hundred ninety-nine thousand, nine hundred seventy-five".