619814961 has 48 divisors (see below), whose sum is σ = 953272320. Its totient is φ = 387504000.

The previous prime is 619814959. The next prime is 619814969. The reversal of 619814961 is 169418916.

It is not a de Polignac number, because 619814961 - 2¹ = 619814959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (619814969) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1344271 + ... + 1344731.

It is an arithmetic number, because the mean of its divisors is an integer number (19859840).

Almost surely, 2^619814961 is an apocalyptic number.

619814961 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

619814961 is a deficient number, since it is larger than the sum of its proper divisors (333457359).

619814961 is a wasteful number, since it uses less digits than its factorization.

619814961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 635 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 619814961 is about 24896.0832461654. The cubic root of 619814961 is about 852.6170602604.

The spelling of 619814961 in words is "six hundred nineteen million, eight hundred fourteen thousand, nine hundred sixty-one".