61677451 has 6 divisors (see below), whose sum is σ = 67794356. Its totient is φ = 56070300.

The previous prime is 61677449. The next prime is 61677457. The reversal of 61677451 is 15477616.

It is not a de Polignac number, because 61677451 - 2¹ = 61677449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61677451.

It is not an unprimeable number, because it can be changed into a prime (61677457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254745 + ... + 254986.

Almost surely, 2^61677451 is an apocalyptic number.

61677451 is a deficient number, since it is larger than the sum of its proper divisors (6116905).

61677451 is a wasteful number, since it uses less digits than its factorization.

61677451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509753 (or 509742 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 61677451 is about 7853.4992837588. The cubic root of 61677451 is about 395.1016156875.

It can be divided in two parts, 61677 and 451, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 61677451 in words is "sixty-one million, six hundred seventy-seven thousand, four hundred fifty-one".