77641338 has 8 divisors (see below), whose sum is σ = 155282688. Its totient is φ = 25880444.

The previous prime is 77641337. The next prime is 77641351. The reversal of 77641338 is 83314677.

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

77641338 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 77641296 and 77641305.

It is not an unprimeable number, because it can be changed into a prime (77641337) by changing a digit.

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, 6470106 + ... + 6470117.

It is an arithmetic number, because the mean of its divisors is an integer number (19410336).

Almost surely, 2^77641338 is an apocalyptic number.

77641338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77641338 is a wasteful number, since it uses less digits than its factorization.

77641338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12940228.

The product of its digits is 84672, while the sum is 39.

The square root of 77641338 is about 8811.4322331843. The cubic root of 77641338 is about 426.6099728002.

The spelling of 77641338 in words is "seventy-seven million, six hundred forty-one thousand, three hundred thirty-eight".