611422040 has 64 divisors (see below), whose sum is σ = 1427781600. Its totient is φ = 235450368.

The previous prime is 611422039. The next prime is 611422067. The reversal of 611422040 is 40224116.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141431 + ... + 145689.

Almost surely, 2^611422040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611422040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713890800).

611422040 is an abundant number, since it is smaller than the sum of its proper divisors (816359560).

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

611422040 is a wasteful number, since it uses less digits than its factorization.

611422040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404 (or 4400 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 611422040 is about 24726.9496703496. The cubic root of 611422040 is about 848.7511256034.

Adding to 611422040 its reverse (40224116), we get a palindrome (651646156).

The spelling of 611422040 in words is "six hundred eleven million, four hundred twenty-two thousand, forty".