88766640 has 240 divisors, whose sum is σ = 318479616. Its totient is φ = 22118400.

The previous prime is 88766633. The next prime is 88766653. The reversal of 88766640 is 4666788.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 915072 + ... + 915168.

Almost surely, 2^88766640 is an apocalyptic number.

88766640 is a gapful number since it is divisible by the number (80) 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 88766640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159239808).

88766640 is an abundant number, since it is smaller than the sum of its proper divisors (229712976).

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

88766640 is a wasteful number, since it uses less digits than its factorization.

88766640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 88766640 is about 9421.6049588167. The cubic root of 88766640 is about 446.0839459380.

The spelling of 88766640 in words is "eighty-eight million, seven hundred sixty-six thousand, six hundred forty".