65166420 has 48 divisors (see below), whose sum is σ = 199055808. Its totient is φ = 15797760.

The previous prime is 65166419. The next prime is 65166449. The reversal of 65166420 is 2466156.

65166420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48709 + ... + 50028.

It is an arithmetic number, because the mean of its divisors is an integer number (4146996).

Almost surely, 2^65166420 is an apocalyptic number.

65166420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65166420 is an abundant number, since it is smaller than the sum of its proper divisors (133889388).

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

65166420 is a wasteful number, since it uses less digits than its factorization.

65166420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98760 (or 98758 counting only the distinct ones).

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

The square root of 65166420 is about 8072.5720808179. The cubic root of 65166420 is about 402.4154265937.

The spelling of 65166420 in words is "sixty-five million, one hundred sixty-six thousand, four hundred twenty".