65381434 has 4 divisors (see below), whose sum is σ = 98072154. Its totient is φ = 32690716.

The previous prime is 65381423. The next prime is 65381453. The reversal of 65381434 is 43418356.

It is a happy number.

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., 49660209 + 15721225 = 7047^2 + 3965^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65381434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16345357 + ... + 16345360.

Almost surely, 2^65381434 is an apocalyptic number.

65381434 is a deficient number, since it is larger than the sum of its proper divisors (32690720).

65381434 is a wasteful number, since it uses less digits than its factorization.

65381434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32690719.

The product of its digits is 34560, while the sum is 34.

The square root of 65381434 is about 8085.8786782885. The cubic root of 65381434 is about 402.8575252630.

The spelling of 65381434 in words is "sixty-five million, three hundred eighty-one thousand, four hundred thirty-four".