65772620 has 12 divisors (see below), whose sum is σ = 138122544. Its totient is φ = 26309040.

The previous prime is 65772613. The next prime is 65772647. The reversal of 65772620 is 2627756.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644296 + ... + 1644335.

It is an arithmetic number, because the mean of its divisors is an integer number (11510212).

Almost surely, 2^65772620 is an apocalyptic number.

It is an amenable number.

65772620 is an abundant number, since it is smaller than the sum of its proper divisors (72349924).

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

65772620 is a wasteful number, since it uses less digits than its factorization.

65772620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288640 (or 3288638 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 65772620 is about 8110.0320591228. The cubic root of 65772620 is about 403.6593786143.

The spelling of 65772620 in words is "sixty-five million, seven hundred seventy-two thousand, six hundred twenty".