3781497 has 16 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 2326272.

The previous prime is 3781489. The next prime is 3781501. The reversal of 3781497 is 7941873.

It is not a de Polignac number, because 3781497 - 2³ = 3781489 is a prime.

It is a super-2 number, since 2×3781497² = 28599439122018, which contains 22 as substring.

3781497 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3781447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2004 + ... + 3402.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

Almost surely, 2^3781497 is an apocalyptic number.

It is an amenable number.

3781497 is a deficient number, since it is larger than the sum of its proper divisors (1661703).

3781497 is a wasteful number, since it uses less digits than its factorization.

3781497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472.

The product of its digits is 42336, while the sum is 39.

The square root of 3781497 is about 1944.6071582713. The cubic root of 3781497 is about 155.7953842665.

It can be divided in two parts, 3781 and 497, that added together give a triangular number (4278 = T₉₂).

The spelling of 3781497 in words is "three million, seven hundred eighty-one thousand, four hundred ninety-seven".