64802997 has 72 divisors (see below), whose sum is σ = 119036736. Its totient is φ = 34432128.

The previous prime is 64802987. The next prime is 64803019. The reversal of 64802997 is 79920846.

It is a happy number.

It is not a de Polignac number, because 64802997 - 2⁴ = 64802981 is a prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64802917) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 780718 + ... + 780800.

It is an arithmetic number, because the mean of its divisors is an integer number (1653288).

Almost surely, 2^64802997 is an apocalyptic number.

It is an amenable number.

64802997 is a deficient number, since it is larger than the sum of its proper divisors (54233739).

64802997 is an frugal number, since it uses more digits than its factorization.

64802997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 64802997 is about 8050.0308695060. The cubic root of 64802997 is about 401.6659622086.

The spelling of 64802997 in words is "sixty-four million, eight hundred two thousand, nine hundred ninety-seven".