61679536 has 30 divisors (see below), whose sum is σ = 126956780. Its totient is φ = 29023488.

The previous prime is 61679531. The next prime is 61679543. The reversal of 61679536 is 63597616.

It is a super-2 number, since 2×61679536² = 7608730322350592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 61679492 and 61679501.

It is not an unprimeable number, because it can be changed into a prime (61679531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2046 + ... + 11293.

Almost surely, 2^61679536 is an apocalyptic number.

It is an amenable number.

61679536 is an abundant number, since it is smaller than the sum of its proper divisors (65277244).

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

61679536 is a wasteful number, since it uses less digits than its factorization.

61679536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13381 (or 13358 counting only the distinct ones).

The product of its digits is 204120, while the sum is 43.

The square root of 61679536 is about 7853.6320260119. The cubic root of 61679536 is about 395.1060677608.

The spelling of 61679536 in words is "sixty-one million, six hundred seventy-nine thousand, five hundred thirty-six".