64672071 has 12 divisors (see below), whose sum is σ = 86974248. Its totient is φ = 42744064.

The previous prime is 64672061. The next prime is 64672079. The reversal of 64672071 is 17027646.

It is not a de Polignac number, because 64672071 - 2⁹ = 64671559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64672079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183031 + ... + 183383.

It is an arithmetic number, because the mean of its divisors is an integer number (7247854).

Almost surely, 2^64672071 is an apocalyptic number.

64672071 is a deficient number, since it is larger than the sum of its proper divisors (22302177).

64672071 is an equidigital number, since it uses as much as digits as its factorization.

64672071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 64672071 is about 8041.8947394255. The cubic root of 64672071 is about 401.3952752750.

The spelling of 64672071 in words is "sixty-four million, six hundred seventy-two thousand, seventy-one".