61575679 has 8 divisors (see below), whose sum is σ = 67230288. Its totient is φ = 55930560.

The previous prime is 61575653. The next prime is 61575691. The reversal of 61575679 is 97657516.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61575679 - 2⁹ = 61575167 is a prime.

It is a super-2 number, since 2×61575679² = 7583128488622082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61575179) 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, 24049 + ... + 26485.

It is an arithmetic number, because the mean of its divisors is an integer number (8403786).

Almost surely, 2^61575679 is an apocalyptic number.

61575679 is a deficient number, since it is larger than the sum of its proper divisors (5654609).

61575679 is a wasteful number, since it uses less digits than its factorization.

61575679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745.

The product of its digits is 396900, while the sum is 46.

The square root of 61575679 is about 7847.0172040082. The cubic root of 61575679 is about 394.8841811803.

The spelling of 61575679 in words is "sixty-one million, five hundred seventy-five thousand, six hundred seventy-nine".