640547119 has 2 divisors, whose sum is σ = 640547120. Its totient is φ = 640547118.

The previous prime is 640547101. The next prime is 640547137. The reversal of 640547119 is 911745046.

It is a balanced prime because it is at equal distance from previous prime (640547101) and next prime (640547137).

It is a cyclic number.

It is not a de Polignac number, because 640547119 - 2²¹ = 638449967 is a prime.

It is a super-2 number, since 2×640547119² = 820601223318400322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640547189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320273559 + 320273560.

It is an arithmetic number, because the mean of its divisors is an integer number (320273560).

Almost surely, 2^640547119 is an apocalyptic number.

640547119 is a deficient number, since it is larger than the sum of its proper divisors (1).

640547119 is an equidigital number, since it uses as much as digits as its factorization.

640547119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 640547119 is about 25309.0323600093. The cubic root of 640547119 is about 862.0193752677.

The spelling of 640547119 in words is "six hundred forty million, five hundred forty-seven thousand, one hundred nineteen".