66157050 has 96 divisors (see below), whose sum is σ = 174988800. Its totient is φ = 16493760.

The previous prime is 66156989. The next prime is 66157051. The reversal of 66157050 is 5075166.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 66156999 and 66157017.

It is not an unprimeable number, because it can be changed into a prime (66157051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 396067 + ... + 396233.

It is an arithmetic number, because the mean of its divisors is an integer number (1822800).

Almost surely, 2^66157050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66157050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87494400).

66157050 is an abundant number, since it is smaller than the sum of its proper divisors (108831750).

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

66157050 is a wasteful number, since it uses less digits than its factorization.

66157050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 66157050 is about 8133.6984207678. The cubic root of 66157050 is about 404.4442919590. Note that the first 3 decimals are identical.

The spelling of 66157050 in words is "sixty-six million, one hundred fifty-seven thousand, fifty".