61377011 has 4 divisors (see below), whose sum is σ = 64607400. Its totient is φ = 58146624.

The previous prime is 61376989. The next prime is 61377047. The reversal of 61377011 is 11077316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61377011 - 2⁶ = 61376947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61377061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615166 + ... + 1615203.

It is an arithmetic number, because the mean of its divisors is an integer number (16151850).

Almost surely, 2^61377011 is an apocalyptic number.

61377011 is a deficient number, since it is larger than the sum of its proper divisors (3230389).

61377011 is a wasteful number, since it uses less digits than its factorization.

61377011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230388.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 61377011 is about 7834.3481541223. The cubic root of 61377011 is about 394.4590383603.

The spelling of 61377011 in words is "sixty-one million, three hundred seventy-seven thousand, eleven".