64482991 has 2 divisors, whose sum is σ = 64482992. Its totient is φ = 64482990.

The previous prime is 64482973. The next prime is 64482997. The reversal of 64482991 is 19928446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64482991 - 2¹¹ = 64480943 is a prime.

It is a super-2 number, since 2×64482991² = 8316112256612162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64482997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32241495 + 32241496.

It is an arithmetic number, because the mean of its divisors is an integer number (32241496).

Almost surely, 2^64482991 is an apocalyptic number.

64482991 is a deficient number, since it is larger than the sum of its proper divisors (1).

64482991 is an equidigital number, since it uses as much as digits as its factorization.

64482991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 64482991 is about 8030.1301981973. The cubic root of 64482991 is about 401.0037105562.

The spelling of 64482991 in words is "sixty-four million, four hundred eighty-two thousand, nine hundred ninety-one".