611624442 has 128 divisors (see below), whose sum is σ = 1521192960. Its totient is φ = 161360640.

The previous prime is 611624437. The next prime is 611624449. The reversal of 611624442 is 244426116.

It is a happy number.

It is a super-2 number, since 2×611624442² = 748168916103622728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (611624449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1169193 + ... + 1169715.

It is an arithmetic number, because the mean of its divisors is an integer number (11884320).

Almost surely, 2^611624442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611624442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760596480).

611624442 is an abundant number, since it is smaller than the sum of its proper divisors (909568518).

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

611624442 is a wasteful number, since it uses less digits than its factorization.

611624442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628.

The product of its digits is 9216, while the sum is 30.

The square root of 611624442 is about 24731.0420726665. The cubic root of 611624442 is about 848.8447706699.

It can be divided in two parts, 61 and 1624442, that added together give a triangular number (1624503 = T₁₈₀₂).

The spelling of 611624442 in words is "six hundred eleven million, six hundred twenty-four thousand, four hundred forty-two".