64147707 has 20 divisors (see below), whose sum is σ = 103198480. Its totient is φ = 39474864.

The previous prime is 64147697. The next prime is 64147717. The reversal of 64147707 is 70774146.

64147707 is a `hidden beast` number, since 641 + 4 + 7 + 7 + 0 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (64147697) and next prime (64147717).

It is not a de Polignac number, because 64147707 - 2¹⁰ = 64146683 is a prime.

It is a super-2 number, since 2×64147707² = 8229856626715698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64147717) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29407 + ... + 31512.

It is an arithmetic number, because the mean of its divisors is an integer number (5159924).

Almost surely, 2^64147707 is an apocalyptic number.

64147707 is a deficient number, since it is larger than the sum of its proper divisors (39050773).

64147707 is a wasteful number, since it uses less digits than its factorization.

64147707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60944 (or 60935 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 64147707 is about 8009.2263671343. The cubic root of 64147707 is about 400.3074864863.

The spelling of 64147707 in words is "sixty-four million, one hundred forty-seven thousand, seven hundred seven".