65197020 has 48 divisors (see below), whose sum is σ = 208631808. Its totient is φ = 14902080.

The previous prime is 65197003. The next prime is 65197021. The reversal of 65197020 is 2079156.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65197021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77196 + ... + 78035.

It is an arithmetic number, because the mean of its divisors is an integer number (4346496).

Almost surely, 2^65197020 is an apocalyptic number.

65197020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65197020 is an abundant number, since it is smaller than the sum of its proper divisors (143434788).

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

65197020 is a wasteful number, since it uses less digits than its factorization.

65197020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155250 (or 155248 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 65197020 is about 8074.4671650828. The cubic root of 65197020 is about 402.4784037382.

The spelling of 65197020 in words is "sixty-five million, one hundred ninety-seven thousand, twenty".