2947668 has 12 divisors (see below), whose sum is σ = 6877920. Its totient is φ = 982552.

The previous prime is 2947661. The next prime is 2947669. The reversal of 2947668 is 8667492.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁷ + 9³ + 4 + 7⁷ + 6⁷ + 6⁸ + 8⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947661) 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, 122808 + ... + 122831.

It is an arithmetic number, because the mean of its divisors is an integer number (573160).

2^2947668 is an apocalyptic number.

It is an amenable number.

2947668 is an abundant number, since it is smaller than the sum of its proper divisors (3930252).

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

2947668 is a wasteful number, since it uses less digits than its factorization.

2947668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245646 (or 245644 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 2947668 is about 1716.8773980689. The cubic root of 2947668 is about 143.3814128711.

The spelling of 2947668 in words is "two million, nine hundred forty-seven thousand, six hundred sixty-eight".