145915646 has 8 divisors (see below), whose sum is σ = 226420920. Its totient is φ = 70442008.

The previous prime is 145915633. The next prime is 145915661. The reversal of 145915646 is 646519541.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257836 + ... + 1257951.

It is an arithmetic number, because the mean of its divisors is an integer number (28302615).

Almost surely, 2^145915646 is an apocalyptic number.

145915646 is a deficient number, since it is larger than the sum of its proper divisors (80505274).

145915646 is a wasteful number, since it uses less digits than its factorization.

145915646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515818.

The product of its digits is 129600, while the sum is 41.

The square root of 145915646 is about 12079.5548759050. The cubic root of 145915646 is about 526.4623128740.

The spelling of 145915646 in words is "one hundred forty-five million, nine hundred fifteen thousand, six hundred forty-six".