65920906 has 4 divisors (see below), whose sum is σ = 98881362. Its totient is φ = 32960452.

The previous prime is 65920901. The next prime is 65920919. The reversal of 65920906 is 60902956.

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., 60699681 + 5221225 = 7791^2 + 2285^2 .

It is not an unprimeable number, because it can be changed into a prime (65920901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16480225 + ... + 16480228.

Almost surely, 2^65920906 is an apocalyptic number.

65920906 is a deficient number, since it is larger than the sum of its proper divisors (32960456).

65920906 is a wasteful number, since it uses less digits than its factorization.

65920906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32960455.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 65920906 is about 8119.1690461524. The cubic root of 65920906 is about 403.9625042808.

The spelling of 65920906 in words is "sixty-five million, nine hundred twenty thousand, nine hundred six".