654077634 has 64 divisors (see below), whose sum is σ = 1567918080. Its totient is φ = 177851520.

The previous prime is 654077623. The next prime is 654077639. The reversal of 654077634 is 436770456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (654077639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202222 + ... + 205430.

It is an arithmetic number, because the mean of its divisors is an integer number (24498720).

Almost surely, 2^654077634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654077634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783959040).

654077634 is an abundant number, since it is smaller than the sum of its proper divisors (913840446).

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

654077634 is a wasteful number, since it uses less digits than its factorization.

654077634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455.

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 654077634 is about 25574.9415248598. The cubic root of 654077634 is about 868.0467184111.

The spelling of 654077634 in words is "six hundred fifty-four million, seventy-seven thousand, six hundred thirty-four".