61675720 has 32 divisors (see below), whose sum is σ = 139345920. Its totient is φ = 24568000.

The previous prime is 61675693. The next prime is 61675727. The reversal of 61675720 is 2757616.

It is not an unprimeable number, because it can be changed into a prime (61675727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6969 + ... + 13111.

It is an arithmetic number, because the mean of its divisors is an integer number (4354560).

Almost surely, 2^61675720 is an apocalyptic number.

It is an amenable number.

61675720 is an abundant number, since it is smaller than the sum of its proper divisors (77670200).

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

61675720 is a wasteful number, since it uses less digits than its factorization.

61675720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6405 (or 6401 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 61675720 is about 7853.3890773347. The cubic root of 61675720 is about 395.0979194296.

The spelling of 61675720 in words is "sixty-one million, six hundred seventy-five thousand, seven hundred twenty".