146937691 has 8 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 145617792.

The previous prime is 146937683. The next prime is 146937701. The reversal of 146937691 is 196739641.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 146937691 - 2³ = 146937683 is a prime.

It is a super-2 number, since 2×146937691² = 43181370072822962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146937631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87526 + ... + 89188.

It is an arithmetic number, because the mean of its divisors is an integer number (18532800).

Almost surely, 2^146937691 is an apocalyptic number.

146937691 is a deficient number, since it is larger than the sum of its proper divisors (1324709).

146937691 is a wasteful number, since it uses less digits than its factorization.

146937691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405.

The product of its digits is 244944, while the sum is 46.

The square root of 146937691 is about 12121.7858007803. The cubic root of 146937691 is about 527.6886304568.

The spelling of 146937691 in words is "one hundred forty-six million, nine hundred thirty-seven thousand, six hundred ninety-one".