65420166 has 16 divisors (see below), whose sum is σ = 149531904. Its totient is φ = 18691464.

The previous prime is 65420153. The next prime is 65420167. The reversal of 65420166 is 66102456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65420167) 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, 778770 + ... + 778853.

It is an arithmetic number, because the mean of its divisors is an integer number (9345744).

Almost surely, 2^65420166 is an apocalyptic number.

65420166 is an abundant number, since it is smaller than the sum of its proper divisors (84111738).

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

65420166 is a wasteful number, since it uses less digits than its factorization.

65420166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557635.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 65420166 is about 8088.2733633329. The cubic root of 65420166 is about 402.9370605713.

The spelling of 65420166 in words is "sixty-five million, four hundred twenty thousand, one hundred sixty-six".