145661976 has 48 divisors (see below), whose sum is σ = 409117800. Its totient is φ = 48553344.

The previous prime is 145661969. The next prime is 145661987. The reversal of 145661976 is 679166541.

145661976 is a `hidden beast` number, since 1 + 4 + 566 + 19 + 76 = 666.

It is a super-2 number, since 2×145661976² = 42434822504449152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35521 + ... + 39408.

Almost surely, 2^145661976 is an apocalyptic number.

It is an amenable number.

145661976 is an abundant number, since it is smaller than the sum of its proper divisors (263455824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145661976 is an equidigital number, since it uses as much as digits as its factorization.

145661976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74950 (or 74934 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 145661976 is about 12069.0503354655. The cubic root of 145661976 is about 526.1570562344.

The spelling of 145661976 in words is "one hundred forty-five million, six hundred sixty-one thousand, nine hundred seventy-six".