2206654638 has 64 divisors (see below), whose sum is σ = 4886894592. Its totient is φ = 660718080.

The previous prime is 2206654601. The next prime is 2206654673. The reversal of 2206654638 is 8364566022.

It is a happy number.

It is a super-2 number, since 2×2206654638² = 9738649382813822088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2206654638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1549995 + ... + 1551417.

It is an arithmetic number, because the mean of its divisors is an integer number (76357728).

Almost surely, 2^2206654638 is an apocalyptic number.

2206654638 is an abundant number, since it is smaller than the sum of its proper divisors (2680239954).

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

2206654638 is a wasteful number, since it uses less digits than its factorization.

2206654638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129.

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 2206654638 is about 46975.0427141903. The cubic root of 2206654638 is about 1301.9014852279.

The spelling of 2206654638 in words is "two billion, two hundred six million, six hundred fifty-four thousand, six hundred thirty-eight".