64078994 has 8 divisors (see below), whose sum is σ = 109849728. Its totient is φ = 27462420.

The previous prime is 64078979. The next prime is 64078997. The reversal of 64078994 is 49987046.

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

It is a super-2 number, since 2×64078994² = 8212234944104072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64078997) 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, 2288522 + ... + 2288549.

It is an arithmetic number, because the mean of its divisors is an integer number (13731216).

Almost surely, 2^64078994 is an apocalyptic number.

64078994 is a deficient number, since it is larger than the sum of its proper divisors (45770734).

64078994 is a wasteful number, since it uses less digits than its factorization.

64078994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577080.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 64078994 is about 8004.9356024893. The cubic root of 64078994 is about 400.1645031708.

The spelling of 64078994 in words is "sixty-four million, seventy-eight thousand, nine hundred ninety-four".