61077657 has 8 divisors (see below), whose sum is σ = 84064000. Its totient is φ = 39404880.

The previous prime is 61077649. The next prime is 61077671. The reversal of 61077657 is 75677016.

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

It is not a de Polignac number, because 61077657 - 2³ = 61077649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61077607) 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, 328282 + ... + 328467.

It is an arithmetic number, because the mean of its divisors is an integer number (10508000).

Almost surely, 2^61077657 is an apocalyptic number.

It is an amenable number.

61077657 is a deficient number, since it is larger than the sum of its proper divisors (22986343).

61077657 is a wasteful number, since it uses less digits than its factorization.

61077657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656783.

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 61077657 is about 7815.2195746505. The cubic root of 61077657 is about 393.8166947744.

The spelling of 61077657 in words is "sixty-one million, seventy-seven thousand, six hundred fifty-seven".