64378396 has 12 divisors (see below), whose sum is σ = 115282552. Its totient is φ = 31440528.

The previous prime is 64378339. The next prime is 64378427. The reversal of 64378396 is 69387346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186975 + ... + 187318.

Almost surely, 2^64378396 is an apocalyptic number.

It is an amenable number.

64378396 is a deficient number, since it is larger than the sum of its proper divisors (50904156).

64378396 is a wasteful number, since it uses less digits than its factorization.

64378396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374340 (or 374338 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The square root of 64378396 is about 8023.6148960428. The cubic root of 64378396 is about 400.7867764424.

It can be divided in two parts, 6 and 4378396, that multiplied together give a triangular number (26270376 = T₇₂₄₈).

The spelling of 64378396 in words is "sixty-four million, three hundred seventy-eight thousand, three hundred ninety-six".