65404087 has 8 divisors (see below), whose sum is σ = 75286400. Its totient is φ = 55656504.

The previous prime is 65404081. The next prime is 65404091. The reversal of 65404087 is 78040456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65404087 - 2¹¹ = 65402039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65404081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32637 + ... + 34582.

It is an arithmetic number, because the mean of its divisors is an integer number (9410800).

Almost surely, 2^65404087 is an apocalyptic number.

65404087 is a deficient number, since it is larger than the sum of its proper divisors (9882313).

65404087 is a wasteful number, since it uses less digits than its factorization.

65404087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67365.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 65404087 is about 8087.2793323837. The cubic root of 65404087 is about 402.9040465112.

The spelling of 65404087 in words is "sixty-five million, four hundred four thousand, eighty-seven".