64907193 has 8 divisors (see below), whose sum is σ = 93200128. Its totient is φ = 39942864.

The previous prime is 64907189. The next prime is 64907197. The reversal of 64907193 is 39170946.

It is an interprime number because it is at equal distance from previous prime (64907189) and next prime (64907197).

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

It is not a de Polignac number, because 64907193 - 2² = 64907189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1664287 = 64907193 / (6 + 4 + 9 + 0 + 7 + 1 + 9 + 3).

It is the 8057-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64907197) by changing a digit.

It is a nontrivial repunit in base 8056.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832105 + ... + 832182.

It is an arithmetic number, because the mean of its divisors is an integer number (11650016).

Almost surely, 2^64907193 is an apocalyptic number.

It is an amenable number.

64907193 is a deficient number, since it is larger than the sum of its proper divisors (28292935).

64907193 is a wasteful number, since it uses less digits than its factorization.

64907193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664303.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 64907193 is about 8056.5000465463. The cubic root of 64907193 is about 401.8811249708.

The spelling of 64907193 in words is "sixty-four million, nine hundred seven thousand, one hundred ninety-three".