65205070 has 32 divisors (see below), whose sum is σ = 136147968. Its totient is φ = 22020768.

The previous prime is 65205029. The next prime is 65205073. The reversal of 65205070 is 7050256.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65205073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2262 + ... + 11641.

It is an arithmetic number, because the mean of its divisors is an integer number (4254624).

Almost surely, 2^65205070 is an apocalyptic number.

65205070 is an abundant number, since it is smaller than the sum of its proper divisors (70942898).

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

65205070 is a wasteful number, since it uses less digits than its factorization.

65205070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13984.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 65205070 is about 8074.9656346018. The cubic root of 65205070 is about 402.4949679810.

The spelling of 65205070 in words is "sixty-five million, two hundred five thousand, seventy".