630657769 has 16 divisors (see below), whose sum is σ = 776355840. Its totient is φ = 500377680.

The previous prime is 630657761. The next prime is 630657791. The reversal of 630657769 is 967756036.

630657769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 630657769 - 2³ = 630657761 is a prime.

It is a super-2 number, since 2×630657769² = 795458443200114722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630657761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58189 + ... + 68170.

It is an arithmetic number, because the mean of its divisors is an integer number (48522240).

Almost surely, 2^630657769 is an apocalyptic number.

It is an amenable number.

630657769 is a deficient number, since it is larger than the sum of its proper divisors (145698071).

630657769 is a wasteful number, since it uses less digits than its factorization.

630657769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126420.

The product of its (nonzero) digits is 1428840, while the sum is 49.

The square root of 630657769 is about 25112.9004497688. The cubic root of 630657769 is about 857.5601338206.

The spelling of 630657769 in words is "six hundred thirty million, six hundred fifty-seven thousand, seven hundred sixty-nine".