64940367 has 16 divisors (see below), whose sum is σ = 90455040. Its totient is φ = 41389152.

The previous prime is 64940327. The next prime is 64940371. The reversal of 64940367 is 76304946.

It is not a de Polignac number, because 64940367 - 2¹² = 64936271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64940327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5338 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (5653440).

Almost surely, 2^64940367 is an apocalyptic number.

64940367 is a deficient number, since it is larger than the sum of its proper divisors (25514673).

64940367 is a wasteful number, since it uses less digits than its factorization.

64940367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7382.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 64940367 is about 8058.5586180160. The cubic root of 64940367 is about 401.9495803204.

The spelling of 64940367 in words is "sixty-four million, nine hundred forty thousand, three hundred sixty-seven".