65974394 has 4 divisors (see below), whose sum is σ = 98961594. Its totient is φ = 32987196.

The previous prime is 65974393. The next prime is 65974397. The reversal of 65974394 is 49347956.

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., 35581225 + 30393169 = 5965^2 + 5513^2 .

It is not an unprimeable number, because it can be changed into a prime (65974393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16493597 + ... + 16493600.

Almost surely, 2^65974394 is an apocalyptic number.

65974394 is a deficient number, since it is larger than the sum of its proper divisors (32987200).

65974394 is a wasteful number, since it uses less digits than its factorization.

65974394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32987199.

The product of its digits is 816480, while the sum is 47.

The square root of 65974394 is about 8122.4623113930. The cubic root of 65974394 is about 404.0717326798.

The spelling of 65974394 in words is "sixty-five million, nine hundred seventy-four thousand, three hundred ninety-four".