149667805 has 24 divisors (see below), whose sum is σ = 209825208. Its totient is φ = 102187008.

The previous prime is 149667803. The next prime is 149667823. The reversal of 149667805 is 508766941.

It can be written as a sum of positive squares in 4 ways, for example, as 47637604 + 102030201 = 6902^2 + 10101^2 .

It is not a de Polignac number, because 149667805 - 2¹ = 149667803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149667803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61777 + ... + 64153.

It is an arithmetic number, because the mean of its divisors is an integer number (8742717).

Almost surely, 2^149667805 is an apocalyptic number.

It is an amenable number.

149667805 is a deficient number, since it is larger than the sum of its proper divisors (60157403).

149667805 is a wasteful number, since it uses less digits than its factorization.

149667805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653 (or 2646 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 149667805 is about 12233.8793928990. The cubic root of 149667805 is about 530.9367615021.

The spelling of 149667805 in words is "one hundred forty-nine million, six hundred sixty-seven thousand, eight hundred five".