65219740 has 48 divisors (see below), whose sum is σ = 140343840. Its totient is φ = 25452800.

The previous prime is 65219699. The next prime is 65219741. The reversal of 65219740 is 4791256.

It is a super-2 number, since 2×65219740² = 8507228971335200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65219696 and 65219705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65219741) 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, 167466 + ... + 167854.

It is an arithmetic number, because the mean of its divisors is an integer number (2923830).

Almost surely, 2^65219740 is an apocalyptic number.

It is an amenable number.

65219740 is an abundant number, since it is smaller than the sum of its proper divisors (75124100).

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

65219740 is a wasteful number, since it uses less digits than its factorization.

65219740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 65219740 is about 8075.8739465150. The cubic root of 65219740 is about 402.5251504930.

It can be divided in two parts, 6521 and 9740, that added together give a palindrome (16261).

The spelling of 65219740 in words is "sixty-five million, two hundred nineteen thousand, seven hundred forty".