3731620 has 12 divisors (see below), whose sum is σ = 7836444. Its totient is φ = 1492640.

The previous prime is 3731603. The next prime is 3731621. The reversal of 3731620 is 261373.

It can be written as a sum of positive squares in 2 ways, for example, as 2683044 + 1048576 = 1638^2 + 1024^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3731591 and 3731600.

It is not an unprimeable number, because it can be changed into a prime (3731621) 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, 93271 + ... + 93310.

It is an arithmetic number, because the mean of its divisors is an integer number (653037).

Almost surely, 2^3731620 is an apocalyptic number.

It is an amenable number.

3731620 is an abundant number, since it is smaller than the sum of its proper divisors (4104824).

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

3731620 is a wasteful number, since it uses less digits than its factorization.

3731620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186590 (or 186588 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 3731620 is about 1931.7401481566. The cubic root of 3731620 is about 155.1073830980.

Adding to 3731620 its reverse (261373), we get a palindrome (3992993).

The spelling of 3731620 in words is "three million, seven hundred thirty-one thousand, six hundred twenty".