64473000 has 64 divisors (see below), whose sum is σ = 201165120. Its totient is φ = 17192000.

The previous prime is 64472983. The next prime is 64473007. The reversal of 64473000 is 37446.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (64473007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7746 + ... + 13745.

It is an arithmetic number, because the mean of its divisors is an integer number (3143205).

Almost surely, 2^64473000 is an apocalyptic number.

64473000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64473000 is an abundant number, since it is smaller than the sum of its proper divisors (136692120).

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

64473000 is a wasteful number, since it uses less digits than its factorization.

64473000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21515 (or 21501 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 64473000 is about 8029.5080795775. The cubic root of 64473000 is about 400.9829989704.

The spelling of 64473000 in words is "sixty-four million, four hundred seventy-three thousand".