7645806690 has 32 divisors (see below), whose sum is σ = 18797498496. Its totient is φ = 1989152640.

The previous prime is 7645806689. The next prime is 7645806691. The reversal of 7645806690 is 966085467.

It is an interprime number because it is at equal distance from previous prime (7645806689) and next prime (7645806691).

It is a super-2 number, since 2×7645806690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7645806691) 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, 3106822 + ... + 3109281.

It is an arithmetic number, because the mean of its divisors is an integer number (587421828).

Almost surely, 2^7645806690 is an apocalyptic number.

7645806690 is an abundant number, since it is smaller than the sum of its proper divisors (11151691806).

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

7645806690 is a wasteful number, since it uses less digits than its factorization.

7645806690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6216154.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 7645806690 is about 87440.3035790704. The cubic root of 7645806690 is about 1970.0372492463.

The spelling of 7645806690 in words is "seven billion, six hundred forty-five million, eight hundred six thousand, six hundred ninety".