146664078 has 128 divisors (see below), whose sum is σ = 361152000. Its totient is φ = 39191040.

The previous prime is 146664073. The next prime is 146664103. The reversal of 146664078 is 870466641.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146664073) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1345488 + ... + 1345596.

It is an arithmetic number, because the mean of its divisors is an integer number (2821500).

Almost surely, 2^146664078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146664078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180576000).

146664078 is an abundant number, since it is smaller than the sum of its proper divisors (214487922).

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

146664078 is a wasteful number, since it uses less digits than its factorization.

146664078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 146664078 is about 12110.4945398609. The cubic root of 146664078 is about 527.3608902213.

The spelling of 146664078 in words is "one hundred forty-six million, six hundred sixty-four thousand, seventy-eight".