47135668 has 6 divisors (see below), whose sum is σ = 82487426. Its totient is φ = 23567832.

The previous prime is 47135663. The next prime is 47135677. The reversal of 47135668 is 86653174.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46539684 + 595984 = 6822^2 + 772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47135668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47135663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5891955 + ... + 5891962.

Almost surely, 2^47135668 is an apocalyptic number.

It is an amenable number.

47135668 is a deficient number, since it is larger than the sum of its proper divisors (35351758).

47135668 is a wasteful number, since it uses less digits than its factorization.

47135668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11783921 (or 11783919 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 47135668 is about 6865.5420761947. The cubic root of 47135668 is about 361.2295100586.

The spelling of 47135668 in words is "forty-seven million, one hundred thirty-five thousand, six hundred sixty-eight".