64547494 has 16 divisors (see below), whose sum is σ = 105753600. Its totient is φ = 29303560.

The previous prime is 64547479. The next prime is 64547507. The reversal of 64547494 is 49474546.

It is a self number, because there is not a number n which added to its sum of digits gives 64547494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25707 + ... + 28105.

It is an arithmetic number, because the mean of its divisors is an integer number (6609600).

Almost surely, 2^64547494 is an apocalyptic number.

64547494 is a deficient number, since it is larger than the sum of its proper divisors (41206106).

64547494 is a wasteful number, since it uses less digits than its factorization.

64547494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635.

The product of its digits is 483840, while the sum is 43.

The square root of 64547494 is about 8034.1455052793. The cubic root of 64547494 is about 401.1373753778.

The spelling of 64547494 in words is "sixty-four million, five hundred forty-seven thousand, four hundred ninety-four".