65215010 has 64 divisors (see below), whose sum is σ = 142055424. Its totient is φ = 21081600.

The previous prime is 65214983. The next prime is 65215013. The reversal of 65215010 is 1051256.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65215013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88604 + ... + 89336.

It is an arithmetic number, because the mean of its divisors is an integer number (2219616).

Almost surely, 2^65215010 is an apocalyptic number.

65215010 is an abundant number, since it is smaller than the sum of its proper divisors (76840414).

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

65215010 is a wasteful number, since it uses less digits than its factorization.

65215010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 65215010 is about 8075.5810936427. The cubic root of 65215010 is about 402.5154193391.

Adding to 65215010 its reverse (1051256), we get a palindrome (66266266).

The spelling of 65215010 in words is "sixty-five million, two hundred fifteen thousand, ten".