64651065 has 8 divisors (see below), whose sum is σ = 103441728. Its totient is φ = 34480560.

The previous prime is 64651057. The next prime is 64651073. The reversal of 64651065 is 56015646.

It is an interprime number because it is at equal distance from previous prime (64651057) and next prime (64651073).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64651065 - 2³ = 64651057 is a prime.

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, 2155021 + ... + 2155050.

It is an arithmetic number, because the mean of its divisors is an integer number (12930216).

Almost surely, 2^64651065 is an apocalyptic number.

It is an amenable number.

64651065 is a deficient number, since it is larger than the sum of its proper divisors (38790663).

64651065 is a wasteful number, since it uses less digits than its factorization.

64651065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310079.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 64651065 is about 8040.5885978577. The cubic root of 64651065 is about 401.3518117825.

The spelling of 64651065 in words is "sixty-four million, six hundred fifty-one thousand, sixty-five".