65223970 has 32 divisors (see below), whose sum is σ = 137806848. Its totient is φ = 21757248.

The previous prime is 65223959. The next prime is 65224001. The reversal of 65223970 is 7932256.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10002 + ... + 15181.

It is an arithmetic number, because the mean of its divisors is an integer number (4306464).

Almost surely, 2^65223970 is an apocalyptic number.

65223970 is an abundant number, since it is smaller than the sum of its proper divisors (72582878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65223970 is a wasteful number, since it uses less digits than its factorization.

65223970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25234.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 65223970 is about 8076.1358334293. The cubic root of 65223970 is about 402.5338525853.

The spelling of 65223970 in words is "sixty-five million, two hundred twenty-three thousand, nine hundred seventy".