64819368 has 48 divisors (see below), whose sum is σ = 185882580. Its totient is φ = 20335104.

The previous prime is 64819343. The next prime is 64819373. The reversal of 64819368 is 86391846.

It can be written as a sum of positive squares in 2 ways, for example, as 62441604 + 2377764 = 7902^2 + 1542^2 .

It is a nude number because it is divisible by every one of its digits.

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, 25255 + ... + 27702.

Almost surely, 2^64819368 is an apocalyptic number.

64819368 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64819368 is an abundant number, since it is smaller than the sum of its proper divisors (121063212).

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

64819368 is a wasteful number, since it uses less digits than its factorization.

64819368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52986 (or 52979 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 64819368 is about 8051.0476336934. The cubic root of 64819368 is about 401.6997832772.

The spelling of 64819368 in words is "sixty-four million, eight hundred nineteen thousand, three hundred sixty-eight".