64780622 has 4 divisors (see below), whose sum is σ = 97170936. Its totient is φ = 32390310.

The previous prime is 64780609. The next prime is 64780631. The reversal of 64780622 is 22608746.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16195154 + ... + 16195157.

It is an arithmetic number, because the mean of its divisors is an integer number (24292734).

Almost surely, 2^64780622 is an apocalyptic number.

64780622 is a deficient number, since it is larger than the sum of its proper divisors (32390314).

64780622 is a wasteful number, since it uses less digits than its factorization.

64780622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32390313.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 64780622 is about 8048.6410032999. The cubic root of 64780622 is about 401.6197281820.

The spelling of 64780622 in words is "sixty-four million, seven hundred eighty thousand, six hundred twenty-two".