64901000 has 32 divisors (see below), whose sum is σ = 151870680. Its totient is φ = 25960000.

The previous prime is 64900999. The next prime is 64901027. The reversal of 64901000 is 10946.

It can be written as a sum of positive squares in 4 ways, for example, as 31561924 + 33339076 = 5618^2 + 5774^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31451 + ... + 33450.

Almost surely, 2^64901000 is an apocalyptic number.

It is an amenable number.

64901000 is an abundant number, since it is smaller than the sum of its proper divisors (86969680).

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

64901000 is a wasteful number, since it uses less digits than its factorization.

64901000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64922 (or 64908 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 64901000 is about 8056.1156893381. The cubic root of 64901000 is about 401.8683429824.

Adding to 64901000 its reverse (10946), we get a palindrome (64911946).

The spelling of 64901000 in words is "sixty-four million, nine hundred one thousand".