76499640 has 160 divisors (see below), whose sum is σ = 293942880. Its totient is φ = 17480448.

The previous prime is 76499629. The next prime is 76499699. The reversal of 76499640 is 4699467.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 20994 + ... + 24366.

It is an arithmetic number, because the mean of its divisors is an integer number (1837143).

Almost surely, 2^76499640 is an apocalyptic number.

76499640 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 76499640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146971440).

76499640 is an abundant number, since it is smaller than the sum of its proper divisors (217443240).

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

76499640 is a wasteful number, since it uses less digits than its factorization.

76499640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403 (or 3390 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 76499640 is about 8746.4072624135. The cubic root of 76499640 is about 424.5085715409.

The spelling of 76499640 in words is "seventy-six million, four hundred ninety-nine thousand, six hundred forty".