1630461 has 8 divisors (see below), whose sum is σ = 2484544. Its totient is φ = 931680.

The previous prime is 1630459. The next prime is 1630463. The reversal of 1630461 is 1640361.

It is an interprime number because it is at equal distance from previous prime (1630459) and next prime (1630463).

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

It is not a de Polignac number, because 1630461 - 2¹ = 1630459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 77641 = 1630461 / (1 + 6 + 3 + 0 + 4 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630463) 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, 38800 + ... + 38841.

It is an arithmetic number, because the mean of its divisors is an integer number (310568).

2^1630461 is an apocalyptic number.

It is an amenable number.

1630461 is a deficient number, since it is larger than the sum of its proper divisors (854083).

1630461 is an equidigital number, since it uses as much as digits as its factorization.

1630461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77651.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1630461 is about 1276.8950622506. The cubic root of 1630461 is about 117.6982859899.

The spelling of 1630461 in words is "one million, six hundred thirty thousand, four hundred sixty-one".