2207620997 has 4 divisors (see below), whose sum is σ = 2227157580. Its totient is φ = 2188084416.

The previous prime is 2207620967. The next prime is 2207620999. The reversal of 2207620997 is 7990267022.

2207620997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 919241761 + 1288379236 = 30319^2 + 35894^2 .

It is a cyclic number.

It is not a de Polignac number, because 2207620997 - 2⁸ = 2207620741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2207620999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9768122 + ... + 9768347.

It is an arithmetic number, because the mean of its divisors is an integer number (556789395).

Almost surely, 2^2207620997 is an apocalyptic number.

It is an amenable number.

2207620997 is a deficient number, since it is larger than the sum of its proper divisors (19536583).

2207620997 is a wasteful number, since it uses less digits than its factorization.

2207620997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19536582.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 2207620997 is about 46985.3274650715. The cubic root of 2207620997 is about 1302.0915044825.

The spelling of 2207620997 in words is "two billion, two hundred seven million, six hundred twenty thousand, nine hundred ninety-seven".