117066780 has 72 divisors (see below), whose sum is σ = 370554912. Its totient is φ = 29859456.

The previous prime is 117066739. The next prime is 117066821. The reversal of 117066780 is 87660711.

It is a happy number.

117066780 is nontrivially palindromic in base 11.

It is an interprime number because it is at equal distance from previous prime (117066739) and next prime (117066821).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9999 + ... + 18278.

It is an arithmetic number, because the mean of its divisors is an integer number (5146596).

Almost surely, 2^117066780 is an apocalyptic number.

117066780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117066780 is an abundant number, since it is smaller than the sum of its proper divisors (253488132).

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

117066780 is a wasteful number, since it uses less digits than its factorization.

117066780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28315 (or 28310 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 117066780 is about 10819.7402926318. The cubic root of 117066780 is about 489.1903608536.

The spelling of 117066780 in words is "one hundred seventeen million, sixty-six thousand, seven hundred eighty".