61393957 has 8 divisors (see below), whose sum is σ = 63871200. Its totient is φ = 58940784.

The previous prime is 61393951. The next prime is 61393963. The reversal of 61393957 is 75939316.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61393951) and next prime (61393963).

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 61393957 - 2¹¹ = 61391909 is a prime.

It is a super-2 number, since 2×61393957² = 7538435912235698, 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 (61393951) 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, 723 + ... + 11104.

It is an arithmetic number, because the mean of its divisors is an integer number (7983900).

Almost surely, 2^61393957 is an apocalyptic number.

It is an amenable number.

61393957 is a deficient number, since it is larger than the sum of its proper divisors (2477243).

61393957 is a wasteful number, since it uses less digits than its factorization.

61393957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035.

The product of its digits is 153090, while the sum is 43.

The square root of 61393957 is about 7835.4295989435. The cubic root of 61393957 is about 394.4953379871.

The spelling of 61393957 in words is "sixty-one million, three hundred ninety-three thousand, nine hundred fifty-seven".