146140665 has 32 divisors (see below), whose sum is σ = 263319552. Its totient is φ = 68568000.

The previous prime is 146140661. The next prime is 146140681. The reversal of 146140665 is 566041641.

It is a happy number.

It is not a de Polignac number, because 146140665 - 2² = 146140661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (146140661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9171 + ... + 19400.

It is an arithmetic number, because the mean of its divisors is an integer number (8228736).

Almost surely, 2^146140665 is an apocalyptic number.

146140665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

146140665 is a deficient number, since it is larger than the sum of its proper divisors (117178887).

146140665 is a wasteful number, since it uses less digits than its factorization.

146140665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28621.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 146140665 is about 12088.8653313700. The cubic root of 146140665 is about 526.7327960457.

The spelling of 146140665 in words is "one hundred forty-six million, one hundred forty thousand, six hundred sixty-five".