77742246 has 8 divisors (see below), whose sum is σ = 155484504. Its totient is φ = 25914080.

The previous prime is 77742239. The next prime is 77742257. The reversal of 77742246 is 64224777.

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

77742246 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6478515 + ... + 6478526.

It is an arithmetic number, because the mean of its divisors is an integer number (19435563).

Almost surely, 2^77742246 is an apocalyptic number.

77742246 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.

77742246 is a wasteful number, since it uses less digits than its factorization.

77742246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12957046.

The product of its digits is 131712, while the sum is 39.

The square root of 77742246 is about 8817.1563443097. The cubic root of 77742246 is about 426.7947099697.

The spelling of 77742246 in words is "seventy-seven million, seven hundred forty-two thousand, two hundred forty-six".