615494 has 16 divisors (see below), whose sum is σ = 1020816. Its totient is φ = 276000.

The previous prime is 615493. The next prime is 615497. The reversal of 615494 is 494516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2084 + ... + 2360.

It is an arithmetic number, because the mean of its divisors is an integer number (63801).

2⁶¹⁵⁴⁹⁴ is an apocalyptic number.

615494 is a deficient number, since it is larger than the sum of its proper divisors (405322).

615494 is a wasteful number, since it uses less digits than its factorization.

615494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its digits is 4320, while the sum is 29.

The square root of 615494 is about 784.5342567409. The cubic root of 615494 is about 85.0631134489.

It can be divided in two parts, 615 and 494, that multiplied together give a triangular number (303810 = T₇₇₉).

The spelling of 615494 in words is "six hundred fifteen thousand, four hundred ninety-four".