64919396 has 12 divisors (see below), whose sum is σ = 120291948. Its totient is φ = 30550272.

The previous prime is 64919389. The next prime is 64919399. The reversal of 64919396 is 69391946.

It can be written as a sum of positive squares in 2 ways, for example, as 23136100 + 41783296 = 4810^2 + 6464^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64919396.

It is not an unprimeable number, because it can be changed into a prime (64919399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477281 + ... + 477416.

It is an arithmetic number, because the mean of its divisors is an integer number (10024329).

Almost surely, 2^64919396 is an apocalyptic number.

It is an amenable number.

64919396 is a deficient number, since it is larger than the sum of its proper divisors (55372552).

64919396 is a wasteful number, since it uses less digits than its factorization.

64919396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954718 (or 954716 counting only the distinct ones).

The product of its digits is 314928, while the sum is 47.

The square root of 64919396 is about 8057.2573497438. The cubic root of 64919396 is about 401.9063088672.

The spelling of 64919396 in words is "sixty-four million, nine hundred nineteen thousand, three hundred ninety-six".