77481036 has 96 divisors (see below), whose sum is σ = 215732160. Its totient is φ = 24261120.

The previous prime is 77481017. The next prime is 77481037. The reversal of 77481036 is 63018477.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (77481037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148456 + ... + 148976.

It is an arithmetic number, because the mean of its divisors is an integer number (2247210).

Almost surely, 2^77481036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77481036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107866080).

77481036 is an abundant number, since it is smaller than the sum of its proper divisors (138251124).

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

77481036 is a wasteful number, since it uses less digits than its factorization.

77481036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 77481036 is about 8802.3312821093. The cubic root of 77481036 is about 426.3161707599.

It can be divided in two parts, 774 and 81036, that added together give a triangular number (81810 = T₄₀₄).

The spelling of 77481036 in words is "seventy-seven million, four hundred eighty-one thousand, thirty-six".