630409477 has 8 divisors (see below), whose sum is σ = 633070080. Its totient is φ = 627755280.

The previous prime is 630409471. The next prime is 630409489. The reversal of 630409477 is 774904036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 630409477 - 2⁷ = 630409349 is a prime.

It is a super-2 number, since 2×630409477² = 794832217382827058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630409471) 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, 304548 + ... + 306610.

It is an arithmetic number, because the mean of its divisors is an integer number (79133760).

Almost surely, 2^630409477 is an apocalyptic number.

It is an amenable number.

630409477 is a deficient number, since it is larger than the sum of its proper divisors (2660603).

630409477 is a wasteful number, since it uses less digits than its factorization.

630409477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 630409477 is about 25107.9564481062. The cubic root of 630409477 is about 857.4475776502.

The spelling of 630409477 in words is "six hundred thirty million, four hundred nine thousand, four hundred seventy-seven".