117540654 has 128 divisors (see below), whose sum is σ = 314081280. Its totient is φ = 28425600.

The previous prime is 117540637. The next prime is 117540671. The reversal of 117540654 is 456045711.

It is an interprime number because it is at equal distance from previous prime (117540637) and next prime (117540671).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 415197 + ... + 415479.

It is an arithmetic number, because the mean of its divisors is an integer number (2453760).

Almost surely, 2^117540654 is an apocalyptic number.

117540654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117540654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157040640).

117540654 is an abundant number, since it is smaller than the sum of its proper divisors (196540626).

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

117540654 is a wasteful number, since it uses less digits than its factorization.

117540654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 117540654 is about 10841.6167613507. The cubic root of 117540654 is about 489.8495359204.

The spelling of 117540654 in words is "one hundred seventeen million, five hundred forty thousand, six hundred fifty-four".