246861491 has 4 divisors (see below), whose sum is σ = 249986400. Its totient is φ = 243736584.

The previous prime is 246861431. The next prime is 246861493. The reversal of 246861491 is 194168642.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-246861491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (246861493) 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, 1562336 + ... + 1562493.

It is an arithmetic number, because the mean of its divisors is an integer number (62496600).

Almost surely, 2^246861491 is an apocalyptic number.

246861491 is a deficient number, since it is larger than the sum of its proper divisors (3124909).

246861491 is an equidigital number, since it uses as much as digits as its factorization.

246861491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124908.

The product of its digits is 82944, while the sum is 41.

The square root of 246861491 is about 15711.8264692556. The cubic root of 246861491 is about 627.3132334125.

The spelling of 246861491 in words is "two hundred forty-six million, eight hundred sixty-one thousand, four hundred ninety-one".