2660427944 has 8 divisors (see below), whose sum is σ = 4988302410. Its totient is φ = 1330213968.

The previous prime is 2660427911. The next prime is 2660427947. The reversal of 2660427944 is 4497240662.

It can be written as a sum of positive squares in only one way, i.e., 2638055044 + 22372900 = 51362^2 + 4730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2660427895 and 2660427904.

It is not an unprimeable number, because it can be changed into a prime (2660427947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166276739 + ... + 166276754.

Almost surely, 2^2660427944 is an apocalyptic number.

It is an amenable number.

2660427944 is a deficient number, since it is larger than the sum of its proper divisors (2327874466).

2660427944 is a wasteful number, since it uses less digits than its factorization.

2660427944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332553499 (or 332553495 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 44.

The square root of 2660427944 is about 51579.3364051923. The cubic root of 2660427944 is about 1385.6402820922.

The spelling of 2660427944 in words is "two billion, six hundred sixty million, four hundred twenty-seven thousand, nine hundred forty-four".