146431679 has 4 divisors (see below), whose sum is σ = 147125880. Its totient is φ = 145737480.

The previous prime is 146431657. The next prime is 146431697. The reversal of 146431679 is 976134641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146431679 is a prime.

It is a super-2 number, since 2×146431679² = 42884473229518082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146431619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346784 + ... + 347205.

It is an arithmetic number, because the mean of its divisors is an integer number (36781470).

Almost surely, 2^146431679 is an apocalyptic number.

146431679 is a deficient number, since it is larger than the sum of its proper divisors (694201).

146431679 is an equidigital number, since it uses as much as digits as its factorization.

146431679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694200.

The product of its digits is 108864, while the sum is 41.

The square root of 146431679 is about 12100.8957932874. The cubic root of 146431679 is about 527.0821968150.

The spelling of 146431679 in words is "one hundred forty-six million, four hundred thirty-one thousand, six hundred seventy-nine".