65405234 has 4 divisors (see below), whose sum is σ = 98107854. Its totient is φ = 32702616.

The previous prime is 65405227. The next prime is 65405243. The reversal of 65405234 is 43250456.

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

It can be written as a sum of positive squares in only one way, i.e., 64048009 + 1357225 = 8003^2 + 1165^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65405197 and 65405206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16351307 + ... + 16351310.

Almost surely, 2^65405234 is an apocalyptic number.

65405234 is a deficient number, since it is larger than the sum of its proper divisors (32702620).

65405234 is a wasteful number, since it uses less digits than its factorization.

65405234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32702619.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 65405234 is about 8087.3502459087. The cubic root of 65405234 is about 402.9064017577.

The spelling of 65405234 in words is "sixty-five million, four hundred five thousand, two hundred thirty-four".