641087078 has 4 divisors (see below), whose sum is σ = 961630620. Its totient is φ = 320543538.

The previous prime is 641087077. The next prime is 641087087. The reversal of 641087078 is 870780146.

641087078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641087077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160271768 + ... + 160271771.

It is an arithmetic number, because the mean of its divisors is an integer number (240407655).

Almost surely, 2^641087078 is an apocalyptic number.

641087078 is a deficient number, since it is larger than the sum of its proper divisors (320543542).

641087078 is a wasteful number, since it uses less digits than its factorization.

641087078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320543541.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 641087078 is about 25319.6974310516. The cubic root of 641087078 is about 862.2615247155.

The spelling of 641087078 in words is "six hundred forty-one million, eighty-seven thousand, seventy-eight".