67499478 has 12 divisors (see below), whose sum is σ = 146248908. Its totient is φ = 22499820.

The previous prime is 67499477. The next prime is 67499479. The reversal of 67499478 is 87499476.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (67499477) and next prime (67499479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67499477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1874968 + ... + 1875003.

It is an arithmetic number, because the mean of its divisors is an integer number (12187409).

Almost surely, 2^67499478 is an apocalyptic number.

67499478 is an abundant number, since it is smaller than the sum of its proper divisors (78749430).

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

67499478 is a wasteful number, since it uses less digits than its factorization.

67499478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749979 (or 3749976 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 67499478 is about 8215.8065946077. The cubic root of 67499478 is about 407.1615929117.

The spelling of 67499478 in words is "sixty-seven million, four hundred ninety-nine thousand, four hundred seventy-eight".