630449736 has 32 divisors (see below), whose sum is σ = 1801285440. Its totient is φ = 180128448.

The previous prime is 630449731. The next prime is 630449737. The reversal of 630449736 is 637944036.

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 (630449731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876171 + ... + 1876506.

It is an arithmetic number, because the mean of its divisors is an integer number (56290170).

Almost surely, 2^630449736 is an apocalyptic number.

It is an amenable number.

630449736 is an abundant number, since it is smaller than the sum of its proper divisors (1170835704).

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

630449736 is a wasteful number, since it uses less digits than its factorization.

630449736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752693 (or 3752689 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 42.

The square root of 630449736 is about 25108.7581532819. The cubic root of 630449736 is about 857.4658299388.

It can be divided in two parts, 630449 and 736, that multiplied together give a palindrome (464010464).

The spelling of 630449736 in words is "six hundred thirty million, four hundred forty-nine thousand, seven hundred thirty-six".