146667621 has 8 divisors (see below), whose sum is σ = 195616960. Its totient is φ = 97748352.

The previous prime is 146667613. The next prime is 146667629. The reversal of 146667621 is 126766641.

It is an interprime number because it is at equal distance from previous prime (146667613) and next prime (146667629).

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

It is not a de Polignac number, because 146667621 - 2³ = 146667613 is a prime.

It is a super-2 number, since 2×146667621² = 43022782099599282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146667621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146667629) 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, 9141 + ... + 19413.

It is an arithmetic number, because the mean of its divisors is an integer number (24452120).

Almost surely, 2^146667621 is an apocalyptic number.

It is an amenable number.

146667621 is a deficient number, since it is larger than the sum of its proper divisors (48949339).

146667621 is a wasteful number, since it uses less digits than its factorization.

146667621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15035.

The product of its digits is 72576, while the sum is 39.

The square root of 146667621 is about 12110.6408170666. The cubic root of 146667621 is about 527.3651367157.

The spelling of 146667621 in words is "one hundred forty-six million, six hundred sixty-seven thousand, six hundred twenty-one".