6955640618 has 4 divisors (see below), whose sum is σ = 10433460930. Its totient is φ = 3477820308.

The previous prime is 6955640603. The next prime is 6955640621. The reversal of 6955640618 is 8160465596.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6562134049 + 393506569 = 81007^2 + 19837^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1738910153 + ... + 1738910156.

Almost surely, 2^6955640618 is an apocalyptic number.

6955640618 is a deficient number, since it is larger than the sum of its proper divisors (3477820312).

6955640618 is a wasteful number, since it uses less digits than its factorization.

6955640618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477820311.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 6955640618 is about 83400.4833199425. The cubic root of 6955640618 is about 1908.8818339415.

The spelling of 6955640618 in words is "six billion, nine hundred fifty-five million, six hundred forty thousand, six hundred eighteen".