2661672 has 64 divisors (see below), whose sum is σ = 7560000. Its totient is φ = 774144.
The previous prime is 2661661. The next prime is 2661689. The reversal of 2661672 is 2761662.
It is a plaindrome in base 15.
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, 5704 + ... + 6152.
It is an arithmetic number, because the mean of its divisors is an integer number (118125).
22661672 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 2661672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3780000).
2661672 is an abundant number, since it is smaller than the sum of its proper divisors (4898328).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2661672 is a wasteful number, since it uses less digits than its factorization.
2661672 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 490 (or 486 counting only the distinct ones).
The product of its digits is 6048, while the sum is 30.
The square root of 2661672 is about 1631.4631469941. The cubic root of 2661672 is about 138.5856230493.
It can be divided in two parts, 2661 and 672, that added together give a palindrome (3333).
The spelling of 2661672 in words is "two million, six hundred sixty-one thousand, six hundred seventy-two".
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