65839954 has 4 divisors (see below), whose sum is σ = 98759934. Its totient is φ = 32919976.

The previous prime is 65839937. The next prime is 65839957. The reversal of 65839954 is 45993856.

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., 51194025 + 14645929 = 7155^2 + 3827^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 65839898 and 65839907.

It is not an unprimeable number, because it can be changed into a prime (65839957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16459987 + ... + 16459990.

Almost surely, 2^65839954 is an apocalyptic number.

65839954 is a deficient number, since it is larger than the sum of its proper divisors (32919980).

65839954 is a wasteful number, since it uses less digits than its factorization.

65839954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32919979.

The product of its digits is 1166400, while the sum is 49.

The square root of 65839954 is about 8114.1822754976. The cubic root of 65839954 is about 403.7970789258.

The spelling of 65839954 in words is "sixty-five million, eight hundred thirty-nine thousand, nine hundred fifty-four".