77627620 has 48 divisors (see below), whose sum is σ = 188052480. Its totient is φ = 26365824.

The previous prime is 77627603. The next prime is 77627623. The reversal of 77627620 is 2672677.

It is a self number, because there is not a number n which added to its sum of digits gives 77627620.

It is not an unprimeable number, because it can be changed into a prime (77627623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12717 + ... + 17803.

It is an arithmetic number, because the mean of its divisors is an integer number (3917760).

Almost surely, 2^77627620 is an apocalyptic number.

77627620 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77627620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94026240).

77627620 is an abundant number, since it is smaller than the sum of its proper divisors (110424860).

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

77627620 is a wasteful number, since it uses less digits than its factorization.

77627620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212 (or 5210 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 77627620 is about 8810.6537782392. The cubic root of 77627620 is about 426.5848462355.

The spelling of 77627620 in words is "seventy-seven million, six hundred twenty-seven thousand, six hundred twenty".