65855477 has 4 divisors (see below), whose sum is σ = 65872620. Its totient is φ = 65838336.

The previous prime is 65855459. The next prime is 65855483. The reversal of 65855477 is 77455856.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34562641 + 31292836 = 5879^2 + 5594^2 .

It is a cyclic number.

It is not a de Polignac number, because 65855477 - 2¹² = 65851381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65855407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (16468155).

Almost surely, 2^65855477 is an apocalyptic number.

It is an amenable number.

65855477 is a deficient number, since it is larger than the sum of its proper divisors (17143).

65855477 is a wasteful number, since it uses less digits than its factorization.

65855477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17142.

The product of its digits is 1176000, while the sum is 47.

The square root of 65855477 is about 8115.1387542050. The cubic root of 65855477 is about 403.8288106689.

The spelling of 65855477 in words is "sixty-five million, eight hundred fifty-five thousand, four hundred seventy-seven".