40688055 has 32 divisors (see below), whose sum is σ = 76593600. Its totient is φ = 20422656.

The previous prime is 40688029. The next prime is 40688057. The reversal of 40688055 is 55088604.

It is a happy number.

It is not a de Polignac number, because 40688055 - 2⁶ = 40687991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40688057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6570 + ... + 11159.

It is an arithmetic number, because the mean of its divisors is an integer number (2393550).

Almost surely, 2^40688055 is an apocalyptic number.

40688055 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40688055 is a deficient number, since it is larger than the sum of its proper divisors (35905545).

40688055 is a wasteful number, since it uses less digits than its factorization.

40688055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17760 (or 17754 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 40688055 is about 6378.7189152682. The cubic root of 40688055 is about 343.9449811729.

The spelling of 40688055 in words is "forty million, six hundred eighty-eight thousand, fifty-five".