64477000 has 128 divisors (see below), whose sum is σ = 176417280. Its totient is φ = 21600000.

The previous prime is 64476989. The next prime is 64477019. The reversal of 64477000 is 77446.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 64477000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426925 + ... + 427075.

It is an arithmetic number, because the mean of its divisors is an integer number (1378260).

Almost surely, 2^64477000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64477000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88208640).

64477000 is an abundant number, since it is smaller than the sum of its proper divisors (111940280).

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

64477000 is a wasteful number, since it uses less digits than its factorization.

64477000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 64477000 is about 8029.7571569755. The cubic root of 64477000 is about 400.9912913244.

The spelling of 64477000 in words is "sixty-four million, four hundred seventy-seven thousand".