64973378 has 8 divisors (see below), whose sum is σ = 98832960. Its totient is φ = 32029060.

The previous prime is 64973347. The next prime is 64973393. The reversal of 64973378 is 87337946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 228638 + ... + 228921.

It is an arithmetic number, because the mean of its divisors is an integer number (12354120).

Almost surely, 2^64973378 is an apocalyptic number.

64973378 is a deficient number, since it is larger than the sum of its proper divisors (33859582).

64973378 is a wasteful number, since it uses less digits than its factorization.

64973378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457632.

The product of its digits is 762048, while the sum is 47.

The square root of 64973378 is about 8060.6065528594. The cubic root of 64973378 is about 402.0176761779.

The spelling of 64973378 in words is "sixty-four million, nine hundred seventy-three thousand, three hundred seventy-eight".