64554697 has 4 divisors (see below), whose sum is σ = 64988100. Its totient is φ = 64121296.

The previous prime is 64554649. The next prime is 64554713. The reversal of 64554697 is 79645546.

64554697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41744521 + 22810176 = 6461^2 + 4776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64554697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64554397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216478 + ... + 216775.

It is an arithmetic number, because the mean of its divisors is an integer number (16247025).

Almost surely, 2^64554697 is an apocalyptic number.

It is an amenable number.

64554697 is a deficient number, since it is larger than the sum of its proper divisors (433403).

64554697 is a wasteful number, since it uses less digits than its factorization.

64554697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433402.

The product of its digits is 907200, while the sum is 46.

The square root of 64554697 is about 8034.5937669555. The cubic root of 64554697 is about 401.1522960968.

The spelling of 64554697 in words is "sixty-four million, five hundred fifty-four thousand, six hundred ninety-seven".