65211790 has 16 divisors (see below), whose sum is σ = 134150112. Its totient is φ = 22358304.

The previous prime is 65211767. The next prime is 65211791. The reversal of 65211790 is 9711256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65211791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465729 + ... + 465868.

It is an arithmetic number, because the mean of its divisors is an integer number (8384382).

Almost surely, 2^65211790 is an apocalyptic number.

65211790 is an abundant number, since it is smaller than the sum of its proper divisors (68938322).

65211790 is a wasteful number, since it uses less digits than its factorization.

65211790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931611.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 65211790 is about 8075.3817247236. The cubic root of 65211790 is about 402.5087944788.

The spelling of 65211790 in words is "sixty-five million, two hundred eleven thousand, seven hundred ninety".