149654 has 4 divisors (see below), whose sum is σ = 224484. Its totient is φ = 74826.

The previous prime is 149629. The next prime is 149689. The reversal of 149654 is 456941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 456941 = 23 ⋅19867.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37412 + ... + 37415.

It is an arithmetic number, because the mean of its divisors is an integer number (56121).

2¹⁴⁹⁶⁵⁴ is an apocalyptic number.

149654 is a deficient number, since it is larger than the sum of its proper divisors (74830).

149654 is an equidigital number, since it uses as much as digits as its factorization.

149654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74829.

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

The square root of 149654 is about 386.8513926561. The cubic root of 149654 is about 53.0920436888.

The spelling of 149654 in words is "one hundred forty-nine thousand, six hundred fifty-four".