734638 has 24 divisors (see below), whose sum is σ = 1237824. Its totient is φ = 326400.

The previous prime is 734627. The next prime is 734647. The reversal of 734638 is 836437.

It is a Harshad number since it is a multiple of its sum of digits (31).

Its product of digits (12096) is a multiple of the sum of its prime factors (108).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17898 + ... + 17938.

It is an arithmetic number, because the mean of its divisors is an integer number (51576).

2⁷³⁴⁶³⁸ is an apocalyptic number.

734638 is a deficient number, since it is larger than the sum of its proper divisors (503186).

734638 is a wasteful number, since it uses less digits than its factorization.

734638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 91 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 734638 is about 857.1102612850. The cubic root of 734638 is about 90.2314208883.

The spelling of 734638 in words is "seven hundred thirty-four thousand, six hundred thirty-eight".