64546020 has 144 divisors (see below), whose sum is σ = 244153728. Its totient is φ = 13409280.

The previous prime is 64546003. The next prime is 64546033. The reversal of 64546020 is 2064546.

It is a happy number.

64546020 is a `hidden beast` number, since 6 + 4 + 54 + 602 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11532 + ... + 16188.

It is an arithmetic number, because the mean of its divisors is an integer number (1695512).

Almost surely, 2^64546020 is an apocalyptic number.

64546020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64546020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122076864).

64546020 is an abundant number, since it is smaller than the sum of its proper divisors (179607708).

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

64546020 is a wasteful number, since it uses less digits than its factorization.

64546020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4690 (or 4685 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 64546020 is about 8034.0537712913. The cubic root of 64546020 is about 401.1343219105.

It can be divided in two parts, 645 and 46020, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 64546020 in words is "sixty-four million, five hundred forty-six thousand, twenty".