64108890 has 24 divisors (see below), whose sum is σ = 166683348. Its totient is φ = 17095680.

The previous prime is 64108867. The next prime is 64108927. The reversal of 64108890 is 9880146.

It is a happy number.

64108890 is a `hidden beast` number, since 641 + 0 + 8 + 8 + 9 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59861169 + 4247721 = 7737^2 + 2061^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356071 + ... + 356250.

Almost surely, 2^64108890 is an apocalyptic number.

64108890 is an abundant number, since it is smaller than the sum of its proper divisors (102574458).

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

64108890 is a wasteful number, since it uses less digits than its factorization.

64108890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712334 (or 712331 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 64108890 is about 8006.8027326768. The cubic root of 64108890 is about 400.2267256311.

The spelling of 64108890 in words is "sixty-four million, one hundred eight thousand, eight hundred ninety".