640363046 has 8 divisors (see below), whose sum is σ = 960700824. Its totient is φ = 320129440.

The previous prime is 640363039. The next prime is 640363067.

640363046 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8240 + ... + 36723.

It is an arithmetic number, because the mean of its divisors is an integer number (120087603).

Almost surely, 2^640363046 is an apocalyptic number.

640363046 is a deficient number, since it is larger than the sum of its proper divisors (320337778).

640363046 is a wasteful number, since it uses less digits than its factorization.

640363046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52086.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 640363046 is about 25305.3955906641. The cubic root of 640363046 is about 861.9367949810.

The spelling of 640363046 in words is "six hundred forty million, three hundred sixty-three thousand, forty-six".