611994648 has 16 divisors (see below), whose sum is σ = 1529986680. Its totient is φ = 203998208.

The previous prime is 611994641. The next prime is 611994671. The reversal of 611994648 is 846499116.

It is a junction number, because it is equal to n+sod(n) for n = 611994597 and 611994606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611994641) 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, 12749865 + ... + 12749912.

Almost surely, 2^611994648 is an apocalyptic number.

It is an amenable number.

611994648 is an abundant number, since it is smaller than the sum of its proper divisors (917992032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611994648 is a wasteful number, since it uses less digits than its factorization.

611994648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25499786 (or 25499782 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 611994648 is about 24738.5255825807. The cubic root of 611994648 is about 849.0159999537.

The spelling of 611994648 in words is "six hundred eleven million, nine hundred ninety-four thousand, six hundred forty-eight".