32061681 has 6 divisors (see below), whose sum is σ = 46311330. Its totient is φ = 21374448.

The previous prime is 32061649. The next prime is 32061727. The reversal of 32061681 is 18616023.

It can be written as a sum of positive squares in only one way, i.e., 23853456 + 8208225 = 4884^2 + 2865^2 .

It is not a de Polignac number, because 32061681 - 2⁵ = 32061649 is a prime.

It is a super-2 number, since 2×32061681² = 2055902777091522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32061641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1781196 + ... + 1781213.

It is an arithmetic number, because the mean of its divisors is an integer number (7718555).

Almost surely, 2^32061681 is an apocalyptic number.

It is an amenable number.

32061681 is a deficient number, since it is larger than the sum of its proper divisors (14249649).

32061681 is a wasteful number, since it uses less digits than its factorization.

32061681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562415 (or 3562412 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 32061681 is about 5662.3035065245. The cubic root of 32061681 is about 317.6840638140.

It can be divided in two parts, 320 and 61681, that added together give a square (62001 = 249²).

The spelling of 32061681 in words is "thirty-two million, sixty-one thousand, six hundred eighty-one".