146694397 has 2 divisors, whose sum is σ = 146694398. Its totient is φ = 146694396.

The previous prime is 146694367. The next prime is 146694403. The reversal of 146694397 is 793496641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107931321 + 38763076 = 10389^2 + 6226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146694397 is a prime.

It is a super-2 number, since 2×146694397² = 43038492222387218, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146694397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146694367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73347198 + 73347199.

It is an arithmetic number, because the mean of its divisors is an integer number (73347199).

Almost surely, 2^146694397 is an apocalyptic number.

It is an amenable number.

146694397 is a deficient number, since it is larger than the sum of its proper divisors (1).

146694397 is an equidigital number, since it uses as much as digits as its factorization.

146694397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 49.

The square root of 146694397 is about 12111.7462407367. The cubic root of 146694397 is about 527.3972271198.

The spelling of 146694397 in words is "one hundred forty-six million, six hundred ninety-four thousand, three hundred ninety-seven".