634033940 has 12 divisors (see below), whose sum is σ = 1331471316. Its totient is φ = 253613568.

The previous prime is 634033937. The next prime is 634033943. The reversal of 634033940 is 49330436.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (634033937) and next prime (634033943).

It can be written as a sum of positive squares in 2 ways, for example, as 170406916 + 463627024 = 13054^2 + 21532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 634033897 and 634033906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634033943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15850829 + ... + 15850868.

It is an arithmetic number, because the mean of its divisors is an integer number (110955943).

Almost surely, 2^634033940 is an apocalyptic number.

It is an amenable number.

634033940 is an abundant number, since it is smaller than the sum of its proper divisors (697437376).

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

634033940 is a wasteful number, since it uses less digits than its factorization.

634033940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31701706 (or 31701704 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 634033940 is about 25180.0305798067. The cubic root of 634033940 is about 859.0877021172.

The spelling of 634033940 in words is "six hundred thirty-four million, thirty-three thousand, nine hundred forty".