77970846 has 8 divisors (see below), whose sum is σ = 155941704. Its totient is φ = 25990280.

The previous prime is 77970839. The next prime is 77970847. The reversal of 77970846 is 64807977.

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

77970846 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 77970795 and 77970804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77970847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6497565 + ... + 6497576.

It is an arithmetic number, because the mean of its divisors is an integer number (19492713).

Almost surely, 2^77970846 is an apocalyptic number.

77970846 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.

77970846 is a wasteful number, since it uses less digits than its factorization.

77970846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12995146.

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 77970846 is about 8830.1101918379. The cubic root of 77970846 is about 427.2126285912.

The spelling of 77970846 in words is "seventy-seven million, nine hundred seventy thousand, eight hundred forty-six".