61651357 has 8 divisors (see below), whose sum is σ = 63616896. Its totient is φ = 59713152.

The previous prime is 61651313. The next prime is 61651391. The reversal of 61651357 is 75315616.

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 61651357 - 2²³ = 53262749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61651307) 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, 2203 + ... + 11320.

It is an arithmetic number, because the mean of its divisors is an integer number (7952112).

Almost surely, 2^61651357 is an apocalyptic number.

It is an amenable number.

61651357 is a deficient number, since it is larger than the sum of its proper divisors (1965539).

61651357 is a wasteful number, since it uses less digits than its factorization.

61651357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13667.

The product of its digits is 18900, while the sum is 34.

The square root of 61651357 is about 7851.8378103473. The cubic root of 61651357 is about 395.0458890232.

The spelling of 61651357 in words is "sixty-one million, six hundred fifty-one thousand, three hundred fifty-seven".