146748997 has 8 divisors (see below), whose sum is σ = 150151320. Its totient is φ = 143370240.

The previous prime is 146748991. The next prime is 146749007. The reversal of 146748997 is 799847641.

It is a Cunningham number, because it is equal to 12114²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 32878756 + 113870241 = 5734^2 + 10671^2 .

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 146748997 - 2¹⁹ = 146224709 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 (146748991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7029 + ... + 18517.

It is an arithmetic number, because the mean of its divisors is an integer number (18768915).

Almost surely, 2^146748997 is an apocalyptic number.

It is an amenable number.

146748997 is a deficient number, since it is larger than the sum of its proper divisors (3402323).

146748997 is a wasteful number, since it uses less digits than its factorization.

146748997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11783.

The product of its digits is 3048192, while the sum is 55.

The square root of 146748997 is about 12114.0000412746. Note that the first 4 decimals coincide. The cubic root of 146748997 is about 527.4626518334.

The spelling of 146748997 in words is "one hundred forty-six million, seven hundred forty-eight thousand, nine hundred ninety-seven".