64697044 has 12 divisors (see below), whose sum is σ = 113853600. Its totient is φ = 32167448.

The previous prime is 64697041. The next prime is 64697077. The reversal of 64697044 is 44079646.

It is a junction number, because it is equal to n+sod(n) for n = 64696988 and 64697006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64697041) 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, 44464 + ... + 45895.

It is an arithmetic number, because the mean of its divisors is an integer number (9487800).

Almost surely, 2^64697044 is an apocalyptic number.

It is an amenable number.

64697044 is a deficient number, since it is larger than the sum of its proper divisors (49156556).

64697044 is a wasteful number, since it uses less digits than its factorization.

64697044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90542 (or 90540 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 64697044 is about 8043.4472709156. The cubic root of 64697044 is about 401.4469346393.

The spelling of 64697044 in words is "sixty-four million, six hundred ninety-seven thousand, forty-four".