377643 has 16 divisors (see below), whose sum is σ = 588800. Its totient is φ = 215208.

The previous prime is 377633. The next prime is 377653. The reversal of 377643 is 346773.

It is an interprime number because it is at equal distance from previous prime (377633) and next prime (377653).

It is not a de Polignac number, because 377643 - 2⁸ = 377387 is a prime.

It is a super-2 number, since 2×377643² = 285228470898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 377643.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (377623) 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, 846 + ... + 1212.

It is an arithmetic number, because the mean of its divisors is an integer number (36800).

377643 is a Friedman number, since it can be written as 7*(3+74*3^6), using all its digits and the basic arithmetic operations.

2³⁷⁷⁶⁴³ is an apocalyptic number.

377643 is a deficient number, since it is larger than the sum of its proper divisors (211157).

377643 is an equidigital number, since it uses as much as digits as its factorization.

377643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 377 counting only the distinct ones).

The product of its digits is 10584, while the sum is 30.

The square root of 377643 is about 614.5266471033. The cubic root of 377643 is about 72.2814983008.

The spelling of 377643 in words is "three hundred seventy-seven thousand, six hundred forty-three".