65728542 has 16 divisors (see below), whose sum is σ = 143407872. Its totient is φ = 19917720.

The previous prime is 65728517. The next prime is 65728567. The reversal of 65728542 is 24582756.

It is an interprime number because it is at equal distance from previous prime (65728517) and next prime (65728567).

It is a self number, because there is not a number n which added to its sum of digits gives 65728542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497878 + ... + 498009.

It is an arithmetic number, because the mean of its divisors is an integer number (8962992).

Almost surely, 2^65728542 is an apocalyptic number.

65728542 is an abundant number, since it is smaller than the sum of its proper divisors (77679330).

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

65728542 is a wasteful number, since it uses less digits than its factorization.

65728542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995903.

The product of its digits is 134400, while the sum is 39.

The square root of 65728542 is about 8107.3141051769. The cubic root of 65728542 is about 403.5691867069.

The spelling of 65728542 in words is "sixty-five million, seven hundred twenty-eight thousand, five hundred forty-two".