7987257207 has 16 divisors (see below), whose sum is σ = 11965932000. Its totient is φ = 5265006912.

The previous prime is 7987257149. The next prime is 7987257209. The reversal of 7987257207 is 7027527897.

It is not a de Polignac number, because 7987257207 - 2⁶ = 7987257143 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7987257209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1659532 + ... + 1664337.

It is an arithmetic number, because the mean of its divisors is an integer number (747870750).

Almost surely, 2^7987257207 is an apocalyptic number.

7987257207 is a deficient number, since it is larger than the sum of its proper divisors (3978674793).

7987257207 is a wasteful number, since it uses less digits than its factorization.

7987257207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323967 (or 3323961 counting only the distinct ones).

The product of its (nonzero) digits is 3457440, while the sum is 54.

The square root of 7987257207 is about 89371.4563325450. The cubic root of 7987257207 is about 1998.9375362687.

The spelling of 7987257207 in words is "seven billion, nine hundred eighty-seven million, two hundred fifty-seven thousand, two hundred seven".