65657742 has 16 divisors (see below), whose sum is σ = 131503440. Its totient is φ = 21854592.

The previous prime is 65657741. The next prime is 65657743. The reversal of 65657742 is 24775656.

It is an interprime number because it is at equal distance from previous prime (65657741) and next prime (65657743).

It is a junction number, because it is equal to n+sod(n) for n = 65657694 and 65657703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65657741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3067 + ... + 11862.

It is an arithmetic number, because the mean of its divisors is an integer number (8218965).

Almost surely, 2^65657742 is an apocalyptic number.

65657742 is an abundant number, since it is smaller than the sum of its proper divisors (65845698).

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

65657742 is a wasteful number, since it uses less digits than its factorization.

65657742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15667.

The product of its digits is 352800, while the sum is 42.

The square root of 65657742 is about 8102.9465011192. The cubic root of 65657742 is about 403.4242321063.

The spelling of 65657742 in words is "sixty-five million, six hundred fifty-seven thousand, seven hundred forty-two".