64380658 has 4 divisors (see below), whose sum is σ = 96570990. Its totient is φ = 32190328.

The previous prime is 64380653. The next prime is 64380661. The reversal of 64380658 is 85608346.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 56445169 + 7935489 = 7513^2 + 2817^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64380658.

It is not an unprimeable number, because it can be changed into a prime (64380653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16095163 + ... + 16095166.

Almost surely, 2^64380658 is an apocalyptic number.

64380658 is a deficient number, since it is larger than the sum of its proper divisors (32190332).

64380658 is a wasteful number, since it uses less digits than its factorization.

64380658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32190331.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 64380658 is about 8023.7558537134. The cubic root of 64380658 is about 400.7914704036.

The spelling of 64380658 in words is "sixty-four million, three hundred eighty thousand, six hundred fifty-eight".