61616460 has 24 divisors (see below), whose sum is σ = 172526256. Its totient is φ = 16431040.

The previous prime is 61616419. The next prime is 61616479. The reversal of 61616460 is 6461616.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513411 + ... + 513530.

It is an arithmetic number, because the mean of its divisors is an integer number (7188594).

Almost surely, 2^61616460 is an apocalyptic number.

61616460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61616460 is an abundant number, since it is smaller than the sum of its proper divisors (110909796).

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

61616460 is a wasteful number, since it uses less digits than its factorization.

61616460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026953 (or 1026951 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 61616460 is about 7849.6152771967. The cubic root of 61616460 is about 394.9713379833.

It can be divided in two parts, 6161 and 6460, that added together give a palindrome (12621).

The spelling of 61616460 in words is "sixty-one million, six hundred sixteen thousand, four hundred sixty".