65420070 has 32 divisors (see below), whose sum is σ = 161254368. Its totient is φ = 16973568.

The previous prime is 65420057. The next prime is 65420081. The reversal of 65420070 is 7002456.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65420070.

It is a congruent 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, 28359 + ... + 30578.

It is an arithmetic number, because the mean of its divisors is an integer number (5039199).

Almost surely, 2^65420070 is an apocalyptic number.

65420070 is an abundant number, since it is smaller than the sum of its proper divisors (95834298).

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

65420070 is a wasteful number, since it uses less digits than its factorization.

65420070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58984.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 65420070 is about 8088.2674288132. The cubic root of 65420070 is about 402.9368634762.

The spelling of 65420070 in words is "sixty-five million, four hundred twenty thousand, seventy".