64140701 has 2 divisors, whose sum is σ = 64140702. Its totient is φ = 64140700.

The previous prime is 64140697. The next prime is 64140731. The reversal of 64140701 is 10704146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60435076 + 3705625 = 7774^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 64140701 - 2² = 64140697 is a prime.

It is a super-2 number, since 2×64140701² = 8228059049542802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64140731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32070350 + 32070351.

It is an arithmetic number, because the mean of its divisors is an integer number (32070351).

Almost surely, 2^64140701 is an apocalyptic number.

It is an amenable number.

64140701 is a deficient number, since it is larger than the sum of its proper divisors (1).

64140701 is an equidigital number, since it uses as much as digits as its factorization.

64140701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 64140701 is about 8008.7889846093. The cubic root of 64140701 is about 400.2929125366.

Adding to 64140701 its reverse (10704146), we get a palindrome (74844847).

The spelling of 64140701 in words is "sixty-four million, one hundred forty thousand, seven hundred one".