62661520 has 20 divisors (see below), whose sum is σ = 145688220. Its totient is φ = 25064576.

The previous prime is 62661517. The next prime is 62661523. The reversal of 62661520 is 2516626.

It is an interprime number because it is at equal distance from previous prime (62661517) and next prime (62661523).

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 47169424 = 3936^2 + 6868^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (62661523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391555 + ... + 391714.

It is an arithmetic number, because the mean of its divisors is an integer number (7284411).

Almost surely, 2^62661520 is an apocalyptic number.

It is an amenable number.

62661520 is an abundant number, since it is smaller than the sum of its proper divisors (83026700).

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

62661520 is a wasteful number, since it uses less digits than its factorization.

62661520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783282 (or 783276 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 62661520 is about 7915.9029807091. The cubic root of 62661520 is about 397.1918316105.

The spelling of 62661520 in words is "sixty-two million, six hundred sixty-one thousand, five hundred twenty".